diff --git a/lib/actions/loginAction.ts b/lib/actions/loginAction.ts
index 5260d69..7f21f9b 100644
--- a/lib/actions/loginAction.ts
+++ b/lib/actions/loginAction.ts
@@ -1,10 +1,19 @@
 "use server";
 
+import { serverApi } from "@/lib/server-api";
+import { isAxiosError } from "axios";
+
 type LoginState = {
   success: boolean;
   message: string;
 };
 
+type LoginResponse = {
+  code: string;
+  status: number;
+  message: string;
+};
+
 export async function loginAction(
   prevState: LoginState,
   formData: FormData,
@@ -12,20 +21,29 @@ export async function loginAction(
   const email = formData.get("email");
   const password = formData.get("password");
 
-  // Mock delay
-  await new Promise((resolve) => setTimeout(resolve, 1000));
-
-  // TODO: 실제 백엔드 API 호출로 교체 필요
-  // const response = await fetch("https://api.comatching.com/login", {
-  //   method: "POST",
-  //   body: JSON.stringify({ email, password }),
-  //   headers: { "Content-Type": "application/json" },
-  // });
-
-  // Mock logic
-  if (email === "test@test.com" && password === "1234") {
-    return { success: true, message: "" };
+  try {
+    await serverApi.post<LoginResponse>({
+      path: "/api/auth/login",
+      body: { email, password },
+    });
+  } catch (error) {
+    if (isAxiosError(error)) {
+      const status = error.response?.status;
+      if (status === 400 || status === 401) {
+        return { success: false, message: "이메일 혹은 비밀번호가 틀립니다" };
+      }
+      console.error("[loginAction] API error", {
+        status,
+        data: error.response?.data,
+      });
+    } else {
+      console.error("[loginAction] Unexpected error", error);
+    }
+    return {
+      success: false,
+      message: "서버 오류가 발생했습니다. 잠시 후 다시 시도해주세요.",
+    };
   }
 
-  return { success: false, message: "이메일 혹은 비밀번호가 틀립니다" };
+  return { success: true, message: "로그인 성공" };
 }