diff --git a/app/api/suggestions/route.ts b/app/api/suggestions/route.ts
index 2fa23003..17c9206a 100644
--- a/app/api/suggestions/route.ts
+++ b/app/api/suggestions/route.ts
@@ -3,6 +3,7 @@ import { unstable_cache } from "next/cache";
 import { getModel, requiresApiKey, type AIProvider } from "@/lib/ai/models";
 import { createGlmFlashModel } from "@/lib/ai/providers/glm";
 import { limitChat, rateLimitResponse } from "@/lib/rate-limit";
+import { parseSuggestionJson } from "@/lib/ai/parse-suggestions";
 
 // 允许流式响应最长30秒
 export const maxDuration = 30;
@@ -150,43 +151,7 @@ export async function POST(req: Request) {
 
     let questions: unknown[] = [];
     try {
-      // 尝试解析 JSON
-      // 清理可能存在的 Markdown 代码块标记
-      let cleanedText = text
-        .replace(/```json/gi, "")
-        .replace(/```/g, "")
-        .trim();
-
-      // 修复大模型可能生成的中文引号
-      cleanedText = cleanedText.replace(/“/g, '"').replace(/”/g, '"');
-      // 修复 key 后的全角冒号 / 冒号被包进引号，如 "action："xx" 或 "action:"xx"
-      cleanedText = cleanedText.replace(
-        /"(title|label|action)"?\s*[：:]\s*"/g,
-        '"$1":"',
-      );
-
-      // 尝试仅提取数组部分，防止 AI 返回了前缀描述文本
-      const arrayMatch = cleanedText.match(/\[[\s\S]*\]/);
-      if (arrayMatch) {
-        cleanedText = arrayMatch[0];
-      }
-
-      try {
-        questions = JSON.parse(cleanedText);
-      } catch (parseError) {
-        // 编号列表 / 多个数组拼接等非法外壳：逐个提取对象
-        const objects = (cleanedText.match(/\{[^{}]*\}/g) ?? []).flatMap(
-          (chunk) => {
-            try {
-              return [JSON.parse(chunk)];
-            } catch {
-              return [];
-            }
-          },
-        );
-        if (objects.length === 0) throw parseError;
-        questions = objects;
-      }
+      questions = parseSuggestionJson(text);
     } catch (e) {
       console.error("解析建议 JSON 失败:", e, "原始文本:", text);
 
diff --git a/lib/ai/parse-suggestions.ts b/lib/ai/parse-suggestions.ts
new file mode 100644
index 00000000..f9c8e302
--- /dev/null
+++ b/lib/ai/parse-suggestions.ts
@@ -0,0 +1,38 @@
+export function parseSuggestionJson(text: string): unknown[] {
+  let cleanedText = text
+    .replace(/```json/gi, "")
+    .replace(/```/g, "")
+    .trim();
+
+  cleanedText = cleanedText.replace(/“/g, '"').replace(/”/g, '"');
+  cleanedText = cleanedText.replace(
+    /"(title|label|action)"?\s*[：:]\s*"/g,
+    '"$1":"',
+  );
+  cleanedText = cleanedText
+    .replace(/"\s*，\s*"/g, '","')
+    .replace(/}\s*，\s*{/g, "},{");
+
+  const arrayMatch = cleanedText.match(/\[[\s\S]*\]/);
+  if (arrayMatch) {
+    cleanedText = arrayMatch[0];
+  }
+
+  try {
+    const parsed: unknown = JSON.parse(cleanedText);
+    return Array.isArray(parsed) ? parsed : [];
+  } catch (parseError) {
+    // 编号列表 / 多个数组拼接等非法外壳：逐个提取对象
+    const objects = (cleanedText.match(/\{[^{}]*\}/g) ?? []).flatMap(
+      (chunk) => {
+        try {
+          return [JSON.parse(chunk)];
+        } catch {
+          return [];
+        }
+      },
+    );
+    if (objects.length === 0) throw parseError;
+    return objects;
+  }
+}
diff --git a/tests/parse-suggestions.test.ts b/tests/parse-suggestions.test.ts
new file mode 100644
index 00000000..259ba4cd
--- /dev/null
+++ b/tests/parse-suggestions.test.ts
@@ -0,0 +1,57 @@
+import { describe, expect, it } from "vitest";
+
+import { parseSuggestionJson } from "@/lib/ai/parse-suggestions";
+
+describe("parseSuggestionJson", () => {
+  it("解析标准 JSON 数组", () => {
+    expect(
+      parseSuggestionJson('[{"title":"a","label":"b","action":"c"}]'),
+    ).toEqual([{ title: "a", label: "b", action: "c" }]);
+  });
+
+  it("剥掉 markdown 代码块和前缀文本", () => {
+    expect(
+      parseSuggestionJson('好的：\n```json\n[{"title":"a"}]\n```'),
+    ).toEqual([{ title: "a" }]);
+  });
+
+  it("中文引号 + 字段间全角逗号", () => {
+    const raw = `[
+    {"title":"基础概念”，“label":"基础知识”，“action":"请解释一下计算机科学中的基本概念是什么？"},
+    {"title":"算法分析”，“label":"算法复杂度”，“action":"如何分析算法的时间复杂度和空间复杂度？"}
+]`;
+    expect(parseSuggestionJson(raw)).toEqual([
+      {
+        title: "基础概念",
+        label: "基础知识",
+        action: "请解释一下计算机科学中的基本概念是什么？",
+      },
+      {
+        title: "算法分析",
+        label: "算法复杂度",
+        action: "如何分析算法的时间复杂度和空间复杂度？",
+      },
+    ]);
+  });
+
+  it("对象间全角逗号", () => {
+    expect(parseSuggestionJson('[{"title":"a"}，{"title":"b"}]')).toEqual([
+      { title: "a" },
+      { title: "b" },
+    ]);
+  });
+
+  it("值内部的全角逗号保持不变", () => {
+    expect(parseSuggestionJson('[{"action":"先读题，再写码"}]')).toEqual([
+      { action: "先读题，再写码" },
+    ]);
+  });
+
+  it("key 后全角冒号", () => {
+    expect(parseSuggestionJson('[{"title"："a"}]')).toEqual([{ title: "a" }]);
+  });
+
+  it("完全无法解析时抛错", () => {
+    expect(() => parseSuggestionJson("没有任何 JSON")).toThrow();
+  });
+});