diff --git a/web/src/pages/admin/logical-models/logical-models-page.tsx b/web/src/pages/admin/logical-models/logical-models-page.tsx
index 70a54701c..5079ebafe 100644
--- a/web/src/pages/admin/logical-models/logical-models-page.tsx
+++ b/web/src/pages/admin/logical-models/logical-models-page.tsx
@@ -238,8 +238,8 @@ export default function LogicalModelsPage() {
             width: 110,
             render: (_, item) => (
                 <div className="text-xs">
-                    <div>{item.routes.filter((route) => route.enabled && route.available).length} 条可用</div>
-                    <div className="text-foreground/45">共 {item.routes.length} 条</div>
+                    <div>{(item.routes || []).filter((route) => route.enabled && route.available).length} 条可用</div>
+                    <div className="text-foreground/45">共 {(item.routes || []).length} 条</div>
                 </div>
             ),
         },
@@ -610,8 +610,9 @@ function PricingFields() {
 }
 
 function logicalPriceLabel(item: AdminLogicalModel) {
-    if (!item.priceTiers.length) return <span className="text-xs text-foreground/45">待配置系统规格价格</span>;
-    return <span className="text-xs">{item.priceTiers.length} 个系统规格档</span>;
+    const priceTiers = item.priceTiers || [];
+    if (!priceTiers.length) return <span className="text-xs text-foreground/45">待配置系统规格价格</span>;
+    return <span className="text-xs">{priceTiers.length} 个系统规格档</span>;
 }
 
 function logicalModelToForm(item: AdminLogicalModel): LogicalModelFormValues {
@@ -631,7 +632,7 @@ function logicalModelToForm(item: AdminLogicalModel): LogicalModelFormValues {
         cachedPriceMicrocredits: 0,
         capabilitySpec: item.capabilitySpec,
         defaultOptions: item.defaultOptions,
-        routes: item.routes.map((route) => ({ channelModelId: route.channelModelId, enabled: route.enabled, priority: route.priority, weight: route.weight })),
+        routes: (item.routes || []).map((route) => ({ channelModelId: route.channelModelId, enabled: route.enabled, priority: route.priority, weight: route.weight })),
     };
 }
 
diff --git a/web/src/services/api/logical-models.ts b/web/src/services/api/logical-models.ts
index bccb24c75..2f167c4ca 100644
--- a/web/src/services/api/logical-models.ts
+++ b/web/src/services/api/logical-models.ts
@@ -72,6 +72,22 @@ export type AdminLogicalModel = PublicLogicalModel & {
     routes: AdminLogicalRoute[];
 };
 
+/**
+ * Keep admin model responses usable when a server is upgraded before its
+ * existing process or historical response shape has caught up with the
+ * current contract. Collection fields must always be arrays for the page.
+ */
+export function normalizeAdminLogicalModel(model: AdminLogicalModel): AdminLogicalModel {
+    return {
+        ...model,
+        priceTiers: Array.isArray(model.priceTiers) ? model.priceTiers : [],
+        legacyModelIds: Array.isArray(model.legacyModelIds) ? model.legacyModelIds : [],
+        capabilityProfiles: Array.isArray(model.capabilityProfiles) ? model.capabilityProfiles : [],
+        defaultOptions: model.defaultOptions && typeof model.defaultOptions === "object" ? model.defaultOptions : {},
+        routes: Array.isArray(model.routes) ? model.routes : [],
+    };
+}
+
 export type LogicalModelMutation = {
     code: string;
     name: string;
@@ -118,7 +134,9 @@ export function quoteLogicalModel(id: string, intent: ModelRequestIntent, signal
 }
 
 export function listAdminLogicalModels() {
-    return request<{ models: AdminLogicalModel[] }>(apiClient.get("/admin/logical-models"));
+    return request<{ models?: AdminLogicalModel[] }>(apiClient.get("/admin/logical-models")).then((result) => ({
+        models: Array.isArray(result?.models) ? result.models.filter(Boolean).map(normalizeAdminLogicalModel) : [],
+    }));
 }
 
 export function createAdminLogicalModel(input: LogicalModelMutation) {
diff --git a/web/test/admin-logical-models.test.ts b/web/test/admin-logical-models.test.ts
new file mode 100644
index 000000000..8d076df9c
--- /dev/null
+++ b/web/test/admin-logical-models.test.ts
@@ -0,0 +1,48 @@
+import { describe, expect, test } from "bun:test";
+
+import { normalizeAdminLogicalModel, type AdminLogicalModel } from "../src/services/api/logical-models";
+
+function legacyModel() {
+    return {
+        id: "model-1",
+        code: "seedance",
+        name: "Seedance",
+        description: "",
+        capability: "video",
+        sortOrder: 0,
+        pricePolicy: "channel",
+        billingMode: "fixed_request",
+        unitPriceMicrocredits: 0,
+        inputPriceMicrocredits: 0,
+        outputPriceMicrocredits: 0,
+        cachedPriceMicrocredits: 0,
+        capabilitySpec: { version: 1, capability: "video" },
+        enabled: true,
+        activeRevisionId: "revision-1",
+        revisionVersion: 1,
+        available: false,
+    } as AdminLogicalModel;
+}
+
+describe("后台前台模型响应归一化", () => {
+    test("兼容旧响应中缺失的集合字段", () => {
+        const model = normalizeAdminLogicalModel(legacyModel());
+
+        expect(model.routes).toEqual([]);
+        expect(model.priceTiers).toEqual([]);
+        expect(model.legacyModelIds).toEqual([]);
+        expect(model.capabilityProfiles).toEqual([]);
+        expect(model.defaultOptions).toEqual({});
+    });
+
+    test("保留当前响应中的线路和价格档", () => {
+        const input = legacyModel();
+        input.routes = [{ id: "route-1" } as AdminLogicalModel["routes"][number]];
+        input.priceTiers = [{ selector: { resolution: "720p" } } as AdminLogicalModel["priceTiers"][number]];
+
+        const model = normalizeAdminLogicalModel(input);
+
+        expect(model.routes).toHaveLength(1);
+        expect(model.priceTiers).toHaveLength(1);
+    });
+});