diff --git a/src/modules/ai/prompts/prompt-template.service.ts b/src/modules/ai/prompts/prompt-template.service.ts
index 66290c3..7e84dde 100644
--- a/src/modules/ai/prompts/prompt-template.service.ts
+++ b/src/modules/ai/prompts/prompt-template.service.ts
@@ -9,6 +9,8 @@ import { REVIEW_CARD_GENERATION_SYSTEM_PROMPT } from './review-card-generation.p
 import { REVIEW_CARD_OUTPUT_SCHEMA_DESC } from './schemas/review-card-generation.schema';
 import { LEARNING_TREND_SYSTEM_PROMPT } from './learning-trend.prompt';
 import { LEARNING_TREND_OUTPUT_SCHEMA_DESC } from './schemas/learning-trend.schema';
+import { RAG_CHAT_SYSTEM_PROMPT } from './rag-chat.prompt';
+import { RAG_CHAT_OUTPUT_SCHEMA_DESC } from './schemas/rag-chat.schema';
 
 export interface PromptTemplate {
   key: string;
@@ -52,6 +54,12 @@ export class PromptTemplateService {
       systemPrompt: LEARNING_TREND_SYSTEM_PROMPT,
       outputSchemaDesc: LEARNING_TREND_OUTPUT_SCHEMA_DESC,
     });
+    this.register({
+      key: 'rag-chat',
+      version: 'v1',
+      systemPrompt: RAG_CHAT_SYSTEM_PROMPT,
+      outputSchemaDesc: RAG_CHAT_OUTPUT_SCHEMA_DESC,
+    });
   }
 
   get(key: string, version?: string): PromptTemplate {
diff --git a/src/modules/ai/prompts/rag-chat.prompt.ts b/src/modules/ai/prompts/rag-chat.prompt.ts
new file mode 100644
index 0000000..e9ad0af
--- /dev/null
+++ b/src/modules/ai/prompts/rag-chat.prompt.ts
@@ -0,0 +1,7 @@
+export const RAG_CHAT_SYSTEM_PROMPT = `你是知习 AI 学习助手。基于提供的知识库内容回答用户问题。
+
+## 回答要求
+- 基于提供的知识库内容回答，不要编造信息
+- 如果知识库内容不足以回答问题，请诚实告知
+- 回答时可以用「根据知识库中的《xxx》...」引用来源
+- 回答应准确、简洁、有依据`;
diff --git a/src/modules/ai/prompts/schemas/rag-chat.schema.ts b/src/modules/ai/prompts/schemas/rag-chat.schema.ts
new file mode 100644
index 0000000..3756b6e
--- /dev/null
+++ b/src/modules/ai/prompts/schemas/rag-chat.schema.ts
@@ -0,0 +1,6 @@
+export const RAG_CHAT_OUTPUT_SCHEMA_DESC = `{
+  "answer": "你的回答内容",
+  "citations": [
+    { "title": "引用的知识点标题", "snippet": "引用的原文片段" }
+  ]
+}`;