diff --git a/src/server/feishu.ts b/src/server/feishu.ts
new file mode 100644
index 0000000..d1e58d7
--- /dev/null
+++ b/src/server/feishu.ts
@@ -0,0 +1,102 @@
+/**
+ * 飞书消息发送模块
+ * 通过飞书自定义机器人Webhook发送项目通知
+ */
+
+const FEISHU_WEBHOOK = 'https://open.feishu.cn/open-apis/bot/v2/hook/58321c74-5881-4f41-bcd4-85f4d7c5b3c1';
+const FEISHU_SECRET = 'UgCdzrcci4s9YS1GSAHt4e';
+
+import { createHmac } from 'crypto';
+
+/**
+ * 生成飞书签名
+ */
+function generateSign(timestamp: number, secret: string): string {
+  const stringToSign = `${timestamp}\n${secret}`;
+  const hmac = createHmac('sha256', stringToSign);
+  return hmac.digest('base64');
+}
+
+export interface FeishuMessageOptions {
+  /** 消息内容 */
+  text: string;
+  /** 是否使用签名校验 */
+  sign?: boolean;
+}
+
+/**
+ * 发送飞书文本消息
+ */
+export async function sendFeishuMessage(options: FeishuMessageOptions): Promise<{ ok: boolean; code: number; msg: string }> {
+  const { text, sign = true } = options;
+  const timestamp = Math.floor(Date.now() / 1000);
+
+  const body: Record<string, unknown> = {
+    msg_type: 'text',
+    content: { text },
+  };
+
+  if (sign) {
+    body.timestamp = String(timestamp);
+    body.sign = generateSign(timestamp, FEISHU_SECRET);
+  }
+
+  try {
+    const response = await fetch(FEISHU_WEBHOOK, {
+      method: 'POST',
+      headers: { 'Content-Type': 'application/json' },
+      body: JSON.stringify(body),
+    });
+
+    const result = await response.json();
+    return {
+      ok: result.code === 0 || result.StatusCode === 0,
+      code: result.code ?? result.StatusCode ?? -1,
+      msg: result.msg ?? result.StatusMessage ?? '',
+    };
+  } catch (error) {
+    return {
+      ok: false,
+      code: -1,
+      msg: error instanceof Error ? error.message : 'Unknown error',
+    };
+  }
+}
+
+/**
+ * 发送项目创建通知
+ */
+export async function notifyProjectCreated(projectName: string, goal: string): Promise<void> {
+  await sendFeishuMessage({
+    text: `🚀 新项目已创建\n\n项目：${projectName}\n目标：${goal}\n\n请及时查看并确认项目章程。`,
+  });
+}
+
+/**
+ * 发送里程碑提醒
+ */
+export async function notifyMilestoneReminder(milestoneName: string, targetDate: string): Promise<void> {
+  await sendFeishuMessage({
+    text: `⏰ 里程碑提醒\n\n里程碑「${milestoneName}」即将到期\n目标日期：${targetDate}\n\n请确认进度是否正常。`,
+  });
+}
+
+/**
+ * 发送风险预警
+ */
+export async function notifyRiskAlert(riskDesc: string, priority: number): Promise<void> {
+  const level = priority >= 15 ? '🔴 高' : priority >= 10 ? '🟡 中' : '🟢 低';
+  await sendFeishuMessage({
+    text: `⚠️ 风险预警\n\n风险：${riskDesc}\n优先级：${level}（${priority}分）\n\n请评估并制定应对措施。`,
+  });
+}
+
+/**
+ * 发送决策请求
+ */
+export async function notifyDecisionRequired(title: string, options: string[]): Promise<void> {
+  const optionList = options.map((o, i) => `  ${i + 1}. ${o}`).join('\n');
+  await sendFeishuMessage({
+    text: `🔑 需要您的决策\n\n${title}\n\n选项：\n${optionList}\n\n请回复选项编号。`,
+  });
+}