diff --git a/src/config.ts b/src/config.ts
index 5ac8aee..0f1a82f 100644
--- a/src/config.ts
+++ b/src/config.ts
@@ -62,6 +62,7 @@ export function resolveQQBotAccount(
       clientSecretFile: qqbot?.clientSecretFile,
       dmPolicy: qqbot?.dmPolicy,
       allowFrom: qqbot?.allowFrom,
+      systemPrompt: qqbot?.systemPrompt,
     };
     appId = qqbot?.appId ?? "";
   } else {
@@ -95,6 +96,7 @@ export function resolveQQBotAccount(
     appId,
     clientSecret,
     secretSource,
+    systemPrompt: accountConfig.systemPrompt,
     config: accountConfig,
   };
 }
diff --git a/src/gateway.ts b/src/gateway.ts
index db3db4b..1bf5f47 100644
--- a/src/gateway.ts
+++ b/src/gateway.ts
@@ -135,11 +135,19 @@ export async function startGateway(ctx: GatewayContext): Promise<void> {
 
         const envelopeOptions = pluginRuntime.channel.reply.resolveEnvelopeFormatOptions(cfg);
 
+        // 组装消息体，添加系统提示词
+        const builtinPrompt = "由于平台限制，你的回复中不可以包含任何URL";
+        const systemPrompts = [builtinPrompt];
+        if (account.systemPrompt) {
+          systemPrompts.push(account.systemPrompt);
+        }
+        const messageBody = `【系统提示】\n${systemPrompts.join("\n")}\n\n【用户输入】\n${event.content}`;
+
         const body = pluginRuntime.channel.reply.formatInboundEnvelope({
           channel: "QQBot",
           from: event.senderName ?? event.senderId,
           timestamp: new Date(event.timestamp).getTime(),
-          body: event.content,
+          body: messageBody,
           chatType: isGroup ? "group" : "direct",
           sender: {
             id: event.senderId,
diff --git a/src/types.ts b/src/types.ts
index 92f4a02..4ef6ce3 100644
--- a/src/types.ts
+++ b/src/types.ts
@@ -17,6 +17,8 @@ export interface ResolvedQQBotAccount {
   appId: string;
   clientSecret: string;
   secretSource: "config" | "file" | "env" | "none";
+  /** 系统提示词 */
+  systemPrompt?: string;
   config: QQBotAccountConfig;
 }
 
@@ -31,6 +33,8 @@ export interface QQBotAccountConfig {
   clientSecretFile?: string;
   dmPolicy?: "open" | "pairing" | "allowlist";
   allowFrom?: string[];
+  /** 系统提示词，会添加在用户消息前面 */
+  systemPrompt?: string;
 }
 
 /**