diff --git a/src/api/module/flow.ts b/src/api/module/flow.ts
index f810b0f..e7736b9 100644
--- a/src/api/module/flow.ts
+++ b/src/api/module/flow.ts
@@ -236,6 +236,10 @@ class FlowApi {
     instanceReroute(instanceId: number | string) {
         return post(`${ROOT}/admin/instance/${instanceId}/reroute`);
     }
+    /** 表达式调试求值（2026-10-10：与运行时同一求值核心；不落库不走流程） */
+    routerEval(body: { expression: string; variablesJson?: string }) {
+        return post(`${ROOT}/admin/router/eval`, body);
+    }
 
     // ==================== 管理面：办件查询 ====================
     adminInstances(params: { status?: number; keyword?: string; page?: number; size?: number }) {
diff --git a/src/views/flow/admin/Routers.vue b/src/views/flow/admin/Routers.vue
index 831ae62..5f1d813 100644
--- a/src/views/flow/admin/Routers.vue
+++ b/src/views/flow/admin/Routers.vue
@@ -131,6 +131,35 @@ function onEnable(row: any) {
     });
 }
 
+// ---- 表达式调试（2026-10-10 四议题）：与运行时同一求值核心（/admin/router/eval） ----
+const evalVisible = ref(false);
+const evaluating = ref(false);
+const evalForm = ref<{ expression: string; variablesJson: string }>({ expression: "", variablesJson: "" });
+const evalResult = ref<{ result: boolean; value?: string; error?: string } | null>(null);
+
+function onEval() {
+    evalForm.value = { expression: "", variablesJson: "" };
+    evalResult.value = null;
+    evalVisible.value = true;
+}
+
+async function doEval() {
+    if (!evalForm.value.expression.trim()) {
+        Message.warning("请填写表达式");
+        return;
+    }
+    evaluating.value = true;
+    evalResult.value = null;
+    try {
+        evalResult.value = (await flowApi.routerEval({
+            expression: evalForm.value.expression.trim(),
+            variablesJson: evalForm.value.variablesJson.trim(),
+        }).send()) || null;
+    } finally {
+        evaluating.value = false;
+    }
+}
+
 onMounted(load);
 </script>
 
@@ -139,6 +168,7 @@ onMounted(load);
         <div class="main-container">
             <div class="fix mb-12">
                 <Button class="fl" type="primary" size="large" @click="onAdd">新增注册</Button>
+                <Button class="fl" size="large" style="margin-left: 8px" @click="onEval">表达式调试</Button>
             </div>
 
             <div class="search-wrap fix">
@@ -177,6 +207,35 @@ onMounted(load);
                     <Button type="primary" :loading="saving" @click="onSave">提交</Button>
                 </template>
             </Modal>
+
+            <Modal v-model="evalVisible" title="表达式调试" :mask-closable="false" :width="560">
+                <p style="color: #808695; font-size: 12px; line-height: 1.6; margin-bottom: 10px">
+                    与 CONDITION 节点 EXPRESSION 模式同一套求值（AviatorScript 沙箱）。变量 = 样例 JSON 的
+                    键 + 线上另注入 schId/bizType/bizId/submitterId/instanceId/instanceVersion/nodeId/nodeName
+                    （调试时请在样例里自行提供内置变量取值）。变量未提供会报错——线上同口径（宁挂起不误放行）
+                </p>
+                <Input v-model="evalForm.expression" placeholder="表达式，如 amount > 1000" :maxlength="200"
+                    style="margin-bottom: 8px" />
+                <Input v-model="evalForm.variablesJson" type="textarea" :rows="5"
+                    placeholder='样例变量 JSON，如 {"amount": 2000, "bizType": "leave"}' />
+                <div v-if="evalResult" style="margin-top: 10px; font-size: 13px">
+                    <template v-if="evalResult.error">
+                        <span style="color: #ed4014">✗ 求值失败：{{ evalResult.error }}</span>
+                    </template>
+                    <template v-else>
+                        <span :style="{ color: evalResult.result ? '#19be6b' : '#ff9900' }">
+                            {{ evalResult.result ? "✓ true（命中该出口）" : "✗ false（不命中）" }}
+                        </span>
+                        <span v-if="evalResult.value !== undefined" style="color: #808695; margin-left: 8px">
+                            求值值：{{ evalResult.value }}
+                        </span>
+                    </template>
+                </div>
+                <template #footer>
+                    <Button @click="evalVisible = false">关闭</Button>
+                    <Button type="primary" :loading="evaluating" @click="doEval">求值</Button>
+                </template>
+            </Modal>
         </div>
     </div>
 </template>
diff --git a/src/views/flow/admin/def-editor/components/ConditionBox.vue b/src/views/flow/admin/def-editor/components/ConditionBox.vue
index 5bf9114..eb40ffb 100644
--- a/src/views/flow/admin/def-editor/components/ConditionBox.vue
+++ b/src/views/flow/admin/def-editor/components/ConditionBox.vue
@@ -1,7 +1,8 @@
 <script setup lang="ts">
 // 条件分支容器（2026-09-24）：紫系区分并行橙；与 ParallelBox 的本质差异——无 JOIN 语义，
-// 分支按出口名互斥选路（运行时调判断服务），分支尾隐式汇合到容器后继。
-// 分支头部的出口名 Input 即 contentJson 里 CONDITION 命名出边的 name（判断接口 outlets 契约）。
+// 分支按出口名互斥选路（运行时调判断服务/表达式求值），分支尾隐式汇合到容器后继。
+// 分支头部的出口名 Input 即 contentJson 里 CONDITION 命名出边的 name（判断接口 outlets 契约）；
+// EXPRESSION 模式（2026-10-10）下分支头部再就地编辑出边 condition，序号即求值优先级。
 import { computed, inject } from "vue";
 import { BRANCH_LABELS, EDITOR_CTX, MAX_BRANCHES, MIN_BRANCHES, ConditionNode } from "../model";
 import NodeList from "./NodeList.vue";
@@ -14,8 +15,10 @@ const issues = computed(() => ctx.issueOf(props.node.uid));
 const hasError = computed(() => issues.value.some((i) => i.level === "error"));
 const canRemoveBranch = computed(() => props.node.branches.length > MIN_BRANCHES);
 const canAddBranch = computed(() => props.node.branches.length < MAX_BRANCHES);
+const expression = computed(() => props.node.judgeMode === "EXPRESSION");
 
 const routerLabel = computed(() => {
+    if (expression.value) return "表达式判断（按分支顺序取首个为真）";
     if (!props.node.routerKey) return "判断服务：未选择";
     const r = ctx.routers.find((x) => x.routerKey === props.node.routerKey);
     return r ? `判断服务：${r.name}（${props.node.routerKey}）` : `判断服务：${props.node.routerKey}`;
@@ -25,19 +28,28 @@ const routerLabel = computed(() => {
 function renameOutlet(i: number, v: string): void {
     props.node.outlets[i] = v;
 }
+
+/** 出口条件就地编辑（EXPRESSION 模式；与 outlets 下标一一对应） */
+function editCondition(i: number, v: string): void {
+    props.node.conditions = props.node.conditions || [];
+    while (props.node.conditions.length <= i) props.node.conditions.push("");
+    props.node.conditions[i] = v;
+}
 </script>
 
 <template>
     <div class="condition-box" :class="{ error: hasError }">
         <div class="cb-title" @click="ctx.openNode(node.uid)">
             条件分支（按出口互斥选路）
-            <span class="cb-hint">（点击标题配置判断服务）</span>
+            <span class="cb-hint">（点击标题配置{{ expression ? "表达式" : "判断服务" }}）</span>
         </div>
         <div class="cb-router">{{ routerLabel }}</div>
         <div class="cb-cols">
             <div v-for="(branch, i) in node.branches" :key="i" class="cb-col">
                 <div class="cb-col-head">
-                    <span class="cb-col-no">{{ BRANCH_LABELS[i] || i + 1 }}</span>
+                    <span class="cb-col-no" :title="expression ? '表达式求值优先级' : undefined">
+                        {{ BRANCH_LABELS[i] || i + 1 }}
+                    </span>
                     <input
                         class="cb-outlet"
                         :value="node.outlets[i]"
@@ -57,6 +69,14 @@ function renameOutlet(i: number, v: string): void {
                         <span class="cb-col-del" title="删除分支">×</span>
                     </Poptip>
                 </div>
+                <input
+                    v-if="expression"
+                    class="cb-cond"
+                    :value="(node.conditions || [])[i] || ''"
+                    placeholder="条件表达式，如 amount > 1000"
+                    maxlength="200"
+                    @input="editCondition(i, ($event.target as HTMLInputElement).value)"
+                />
                 <NodeList :items="branch" :container="`${node.uid}:${i}`" />
             </div>
         </div>
@@ -142,6 +162,25 @@ function renameOutlet(i: number, v: string): void {
     outline: none;
     border-color: #9254de;
 }
+.cb-cond {
+    width: 100%;
+    box-sizing: border-box;
+    border: 1px dashed #d3b8f9;
+    border-radius: 6px;
+    padding: 2px 8px;
+    font-size: 12px;
+    color: #5b3fa8;
+    font-family: Consolas, Monaco, monospace;
+    margin-bottom: 8px;
+}
+.cb-cond:focus {
+    outline: none;
+    border-color: #9254de;
+    border-style: solid;
+}
+.cb-cond::placeholder {
+    color: #c5b3e8;
+}
 .cb-col-del {
     flex: none;
     cursor: pointer;
diff --git a/src/views/flow/admin/def-editor/components/ConditionDrawer.vue b/src/views/flow/admin/def-editor/components/ConditionDrawer.vue
index 3c71bfa..bdf7364 100644
--- a/src/views/flow/admin/def-editor/components/ConditionDrawer.vue
+++ b/src/views/flow/admin/def-editor/components/ConditionDrawer.vue
@@ -1,9 +1,9 @@
 <script setup lang="ts">
 // 条件分支配置抽屉（2026-09-24）：结构与 NotifyDrawer 同源（本地表单 + 确定回写）。
-// 只管节点名与判断服务（flw_router 下拉）；出口命名/分支编排 ConditionBox 就地做。
+// 管节点名与判断方式（2026-10-10 二选一：服务/表达式）；出口命名/条件表达式/分支编排 ConditionBox 就地做。
 import { computed, inject, reactive, watch } from "vue";
 import { Message } from "view-ui-plus";
-import { ConditionNode, EDITOR_CTX } from "../model";
+import { ConditionNode, EDITOR_CTX, JudgeMode } from "../model";
 
 const props = defineProps<{
     modelValue: boolean;
@@ -21,6 +21,7 @@ const ctx = inject(EDITOR_CTX)!;
 const form = reactive({
     name: "",
     routerKey: "",
+    judgeMode: "SERVICE" as JudgeMode,
 });
 
 function syncFromNode(): void {
@@ -28,6 +29,7 @@ function syncFromNode(): void {
     if (!n) return;
     form.name = n.name;
     form.routerKey = n.routerKey || "";
+    form.judgeMode = n.judgeMode === "EXPRESSION" ? "EXPRESSION" : "SERVICE";
 }
 
 watch(
@@ -56,6 +58,16 @@ const routerHint = computed(() => {
     return `调用 ${r.serviceKey}${r.path}；返回出口名即分支走向`;
 });
 
+/** 切换判断方式：表达式模式下 conditions 补齐占位（与 outlets 同位） */
+function switchJudgeMode(mode: JudgeMode): void {
+    form.judgeMode = mode;
+    const n = props.node;
+    if (n && mode === "EXPRESSION") {
+        n.conditions = n.conditions || [];
+        while (n.conditions.length < n.outlets.length) n.conditions.push("");
+    }
+}
+
 function onOk(): void {
     const n = props.node;
     if (!n) {
@@ -66,12 +78,17 @@ function onOk(): void {
         Message.warning("节点名称不能为空");
         return;
     }
-    if (!form.routerKey) {
+    if (form.judgeMode === "SERVICE" && !form.routerKey) {
         Message.warning("请选择判断服务（未配置的判断服务运行到该节点会挂起）");
         return;
     }
     n.name = form.name.trim();
-    n.routerKey = form.routerKey;
+    n.routerKey = form.judgeMode === "SERVICE" ? form.routerKey : "";
+    n.judgeMode = form.judgeMode;
+    if (form.judgeMode === "EXPRESSION") {
+        n.conditions = n.conditions || [];
+        while (n.conditions.length < n.outlets.length) n.conditions.push("");
+    }
     emit("update:modelValue", false);
 }
 
@@ -96,6 +113,17 @@ function onRemove(): void {
             </div>
 
             <div class="fld">
+                <label>判断方式</label>
+                <RadioGroup :model-value="form.judgeMode" @on-change="switchJudgeMode">
+                    <Radio label="SERVICE">服务（外部判断接口）</Radio>
+                    <Radio label="EXPRESSION">表达式</Radio>
+                </RadioGroup>
+                <div class="hint">
+                    简单条件用表达式在编辑器内闭环；复杂判断（查库/调外部系统）沿用注册的判断服务
+                </div>
+            </div>
+
+            <div v-if="form.judgeMode === 'SERVICE'" class="fld">
                 <label>判断服务</label>
                 <Select v-model="form.routerKey" filterable placeholder="请选择判断服务（flw_router 注册）">
                     <Option v-for="o in routerOptions" :key="o.value" :value="o.value" :label="o.label" />
@@ -108,6 +136,15 @@ function onRemove(): void {
                 </div>
             </div>
 
+            <div v-else class="fld">
+                <label>表达式说明</label>
+                <div class="hint">
+                    每个出口在分支列头部就地填写 AviatorScript 条件（如 amount &gt; 1000）；按分支顺序取
+                    首个为真的出口。变量=表单字段 + 内置（schId/bizType/bizId/submitterId/instanceId 等）。
+                    变量未提供或条件全不为真时流程挂起（不配默认出口），可在"条件路由"页调试表达式
+                </div>
+            </div>
+
             <div class="fld">
                 <label>出口与分支</label>
                 <div class="hint">
diff --git a/src/views/flow/admin/def-editor/convert.ts b/src/views/flow/admin/def-editor/convert.ts
index 59d1b72..fa14243 100644
--- a/src/views/flow/admin/def-editor/convert.ts
+++ b/src/views/flow/admin/def-editor/convert.ts
@@ -43,15 +43,19 @@ export function toContentJson(model: EditorModel): DefJson {
      * 条件分支（2026-09-24）无 JOIN 语义：分支尾不互连，隐式汇合到容器后继——cursor 置 null 后
      * 下一个节点（或 END）只接收各分支尾的连线；firstEdgeName 只作用于分支首边（出口名）。
      * walk 返回"尾集合"（普通序列=末节点，末尾含条件分支=各分支尾）。
+     * firstEdgeCondition（2026-10-10）：EXPRESSION 模式分支首边的条件表达式，与出口名同位写入。
      */
-    const walk = (items: EditorItem[], prev: string, firstEdgeName?: string): string[] => {
+    const walk = (items: EditorItem[], prev: string, firstEdgeName?: string,
+                  firstEdgeCondition?: string): string[] => {
         let cursor: string | null = prev;
         let pending: string[] = [];
         let first = true;
         const linkTo = (toId: string): void => {
             if (cursor !== null) {
                 if (first && firstEdgeName) {
-                    edges.push({ from: cursor, to: toId, name: firstEdgeName });
+                    const e: DefEdgeJson = { from: cursor, to: toId, name: firstEdgeName };
+                    if (firstEdgeCondition !== undefined) e.condition = firstEdgeCondition;
+                    edges.push(e);
                 } else {
                     edges.push({ from: cursor, to: toId });
                 }
@@ -102,16 +106,21 @@ export function toContentJson(model: EditorModel): DefJson {
             }
             if (item.kind === "condition") {
                 const condId = `${item.uid}c`;
-                nodes.push({
+                const node: DefNodeJson = {
                     id: condId,
                     type: "CONDITION",
                     name: item.name || "条件判断",
                     routerKey: item.routerKey || "",
-                });
+                };
+                // SERVICE 是后端缺省，不写字段保持最小 JSON；EXPRESSION 显式携带
+                if (item.judgeMode === "EXPRESSION") node.judgeMode = "EXPRESSION";
+                nodes.push(node);
                 linkTo(condId);
                 const tails: string[] = [];
+                const expression = item.judgeMode === "EXPRESSION";
                 item.branches.forEach((branch, bi) => {
-                    tails.push(...walk(branch, condId, item.outlets[bi]));
+                    const cond = expression ? (item.conditions || [])[bi] || "" : undefined;
+                    tails.push(...walk(branch, condId, item.outlets[bi], cond));
                 });
                 cursor = null;
                 pending = tails;
@@ -311,12 +320,19 @@ export function fromContentJson(def: any): ParsedDef {
         // uid 复用 JSON id 并剥掉生成态的 "c" 尾缀：uid+"c" 是本编辑器的 JSON id 生成约定，
         // 剥尾保证"图→树→图→树→图"的 id 收敛（否则每轮追加一个 c，往返不幂等）
         const uidRaw = condId.endsWith("c") ? condId.slice(0, -1) : condId;
+        // 出口条件反解（2026-10-10）：EXPRESSION 模式出边 condition 与 outlets 同位
+        const conditions = heads.map((head) => {
+            const e = edges.find((x) => x.from === condId && x.to === head);
+            return e && e.condition ? String(e.condition) : "";
+        });
         return {
             item: {
                 uid: UsedIds.take(uidRaw),
                 kind: "condition",
                 name: n.name || "条件判断",
                 routerKey: n.routerKey || "",
+                judgeMode: n.judgeMode === "EXPRESSION" ? "EXPRESSION" : "SERVICE",
+                conditions,
                 outlets,
                 branches: branches.map((b) => (b.length ? b : [createApproval()])),
             },
diff --git a/src/views/flow/admin/def-editor/index.vue b/src/views/flow/admin/def-editor/index.vue
index 8a50d7e..c66f311 100644
--- a/src/views/flow/admin/def-editor/index.vue
+++ b/src/views/flow/admin/def-editor/index.vue
@@ -287,6 +287,11 @@ function addBranch(containerUid: string): void {
         const no = item.branches.length + 1;
         item.branches.push([createApproval()]);
         item.outlets.push(`出口${["一", "二", "三", "四", "五", "六"][no - 1] || no}`);
+        // EXPRESSION 模式条件与 outlets 同位（SERVICE 模式不写，序列化时不携带）
+        if (item.judgeMode === "EXPRESSION") {
+            item.conditions = item.conditions || [];
+            while (item.conditions.length < item.outlets.length) item.conditions.push("");
+        }
     } else if (item.kind === "approval" && item.outlets && item.outlets.length >= 2) {
         const no = (item.branches?.length || 0) + 1;
         (item.branches = item.branches || []).push([createApproval()]);
@@ -305,6 +310,7 @@ function removeBranch(containerUid: string, index: number): void {
     }
     branches.splice(index, 1);
     if (item.kind === "condition" || isOutlet) item.outlets!.splice(index, 1);
+    if (item.kind === "condition" && item.conditions) item.conditions.splice(index, 1);
 }
 
 /** 退出多出口：仅保留出口①泳道内容，替换为「本节点(去 outlets) + ①泳道节点序列」 */
diff --git a/src/views/flow/admin/def-editor/model.ts b/src/views/flow/admin/def-editor/model.ts
index 4faa476..ccd7366 100644
--- a/src/views/flow/admin/def-editor/model.ts
+++ b/src/views/flow/admin/def-editor/model.ts
@@ -49,17 +49,25 @@ export interface ParallelNode {
     branches: EditorItem[][];
 }
 
+/** CONDITION 判断方式（2026-10-10 四议题）：SERVICE=外部判断服务（缺省）｜EXPRESSION=内置表达式引擎 */
+export type JudgeMode = "SERVICE" | "EXPRESSION";
+
 /**
- * 条件分支容器（2026-09-24 CONDITION）：运行时同步调外部判断服务（flw_router，routerKey 寻址）
- * 按返回出口名互斥选路——与并行的本质差异：无 JOIN 语义，分支尾隐式汇合到容器后继。
- * outlets[i] 即第 i 条分支首边的 name（判断接口的 outlets 契约），必须非空且唯一。
+ * 条件分支容器（2026-09-24 CONDITION）：按返回出口名互斥选路——与并行的本质差异：无 JOIN 语义，
+ * 分支尾隐式汇合到容器后继。outlets[i] 即第 i 条分支首边的 name（判断接口的 outlets 契约），
+ * 必须非空且唯一。判断方式二选一（2026-10-10）：SERVICE 调 flw_router 注册的外部判断服务；
+ * EXPRESSION 用出边 condition 表达式（AviatorScript，按分支顺序取首个 true）。
  */
 export interface ConditionNode {
     uid: string;
     kind: "condition";
     name: string;
-    /** 判断服务注册键（flw_router.router_key，发布校验须已注册且启用） */
+    /** 判断服务注册键（flw_router.router_key，SERVICE 模式发布校验须已注册且启用） */
     routerKey: string;
+    /** 判断方式：缺省 SERVICE（旧定义无此字段） */
+    judgeMode?: JudgeMode;
+    /** EXPRESSION 模式各出口条件表达式（与 outlets 一一对应；SERVICE 模式无意义） */
+    conditions?: string[];
     /** 各分支出口名（与 branches 一一对应） */
     outlets: string[];
     branches: EditorItem[][];
@@ -104,6 +112,8 @@ export interface DefNodeJson {
     receivers?: Assignee;
     /** CONDITION 节点的判断服务注册键（flw_router.router_key） */
     routerKey?: string;
+    /** CONDITION 判断方式：SERVICE（缺省）｜EXPRESSION（出边 condition 表达式） */
+    judgeMode?: string;
     countersign?: Countersign;
     waitFor?: string;
     deadlineHours?: number;
@@ -113,6 +123,8 @@ export interface DefEdgeJson {
     from: string;
     to: string;
     name?: string;
+    /** CONDITION EXPRESSION 模式的出口条件表达式（AviatorScript；SERVICE 模式不携带） */
+    condition?: string;
 }
 
 export interface DefJson {
@@ -165,13 +177,15 @@ export function createParallel(): ParallelNode {
     return { uid: newUid(), kind: "parallel", branches: [[createApproval()], [createApproval()]] };
 }
 
-/** 条件分支：默认 2 分支占位出口名，插入后弹配置抽屉选判断服务 */
+/** 条件分支：默认 2 分支占位出口名，插入后弹配置抽屉选判断方式（缺省服务） */
 export function createCondition(): ConditionNode {
     return {
         uid: newUid(),
         kind: "condition",
         name: "条件判断",
         routerKey: "",
+        judgeMode: "SERVICE",
+        conditions: ["", ""],
         outlets: ["出口一", "出口二"],
         branches: [[createApproval()], [createApproval()]],
     };
diff --git a/src/views/flow/admin/def-editor/validate.ts b/src/views/flow/admin/def-editor/validate.ts
index a50e52e..18e7c52 100644
--- a/src/views/flow/admin/def-editor/validate.ts
+++ b/src/views/flow/admin/def-editor/validate.ts
@@ -103,9 +103,19 @@ export function validateModel(model: EditorModel, depts: DeptOption[], routers:
 
             if (item.kind === "condition") {
                 // 条件分支（2026-09-24）：判断服务必选（未注册仅 warn，发布期后端权威拦截）；
-                // 出口名即判断接口 outlets 契约，非空唯一（镜像后端 CONDITION 校验口径）
+                // 出口名即判断接口 outlets 契约，非空唯一（镜像后端 CONDITION 校验口径）。
+                // EXPRESSION（2026-10-10）：每出口条件非空（语法后端拦，前端不重复实现）
                 if (!item.name.trim()) push(item.uid, "error", path, "节点名称不能为空");
-                if (!item.routerKey) {
+                const expression = item.judgeMode === "EXPRESSION";
+                if (expression) {
+                    item.outlets.forEach((o, i) => {
+                        const cond = (item.conditions || [])[i] || "";
+                        if (!cond.trim()) {
+                            push(item.uid, "error", path,
+                                `出口「${o || i + 1}」未配条件表达式（表达式模式下每个出口必须配置，发布会被拦截）`);
+                        }
+                    });
+                } else if (!item.routerKey) {
                     push(item.uid, "error", path, "未选择判断服务（发布后运行到该节点会挂起）");
                 } else if (routers.length && !routers.some((r) => r.routerKey === item.routerKey && r.status === 1)) {
                     push(item.uid, "warn", path, `判断服务「${item.routerKey}」未注册或已停用，发布会被拦截`);