diff --git a/frontend/src/Attendance.jsx b/frontend/src/Attendance.jsx
index 79650f7..4f1cbef 100644
--- a/frontend/src/Attendance.jsx
+++ b/frontend/src/Attendance.jsx
@@ -1,11 +1,91 @@
-import { useState } from "react";
+import { useEffect, useState } from "react";
 import Header from "./components/Header";
 import InputBlock from "./components/InputBlock";
 import AttendanceWeekInfo from "./components/AttendanceWeekInfo";
 import styles from "./Attendance.module.css";
+import axios from "axios";
 
 const Attendance = () => {
   const [attendanceCode, setAttendanceCode] = useState([""]);
+  const [attendanceData, setAttendanceData] = useState([]);
+
+  const getSubImage = (count) => {
+    switch (count) {
+      case 3:
+        return "/assets/img/full_coin_green.png";
+      case 2:
+        return "/assets/img/two_coin_yellow.png";
+      case 1:
+        return "/assets/img/one_coin_yellow.png";
+      default:
+        return "/assets/img/three_out_red.png";
+    }
+  };
+
+  // 날짜 기반 주차 계산
+  const getWeekFromDate = (dateStr) => {
+    const startDate = new Date("2025-06-24"); // 세션 시작일
+    const currentDate = new Date(dateStr);
+
+    // 두 날짜 사이 일수 차이 계산
+    const diffTime = currentDate.getTime() - startDate.getTime();
+    const diffDays = Math.floor(diffTime / (1000 * 60 * 60 * 24));
+
+    // 0~6일 사이: 1주차, 7~13일 사이: 2주차
+    return Math.floor(diffDays / 7) + 1;
+  };
+
+  const processWeeklyAttendance = (rawData) => {
+    const weekSlotMap = new Map();
+    // { weekNum: [boolean, boolean, ...] }
+
+    rawData.forEach(({ date, slots }) => {
+      const week = getWeekFromDate(date); // 날짜 기준 주차 계산
+      const presentSlots = slots.map((slot) => slot.status); // T/F 목록 생성
+      const existing = weekSlotMap.get(week) || [];
+      weekSlotMap.set(week, [...existing, ...presentSlots]);
+    });
+
+    return Array.from({ length: 5 }, (_, i) => {
+      const week = i + 1;
+      const all9 = weekSlotMap.get(week) || []; // 총 9개의 출석 슬롯 (3번의 출석체크*주차당 3번의 세션)
+
+      const classes = [0, 1, 2].map((classIdx) => {
+        // 0,1,2 -> 세션당 3번의 출석체크
+        const slice = all9.slice(classIdx * 3, classIdx * 3 + 3);
+        const count = slice.filter(Boolean).length; // 출석 성공(True) 카운트
+        return {
+          image: getSubImage(count),
+          count,
+        };
+      });
+
+      return { week, classes }; // week: 1, classes: [ {image, count}, ... ]
+    });
+  };
+
+  useEffect(() => {
+    const fetchAttendance = async () => {
+      try {
+        const user = JSON.parse(localStorage.getItem("user"));
+        const userId = user?.id;
+
+        if (!userId) return;
+
+        const res = await axios.get(`/api/attendance/user`, {
+          params: { userId },
+        });
+
+        const rawData = res.data.data;
+        const weekly = processWeeklyAttendance(rawData);
+        setAttendanceData(weekly);
+      } catch (error) {
+        console.error("출석 정보 가져오기 실패:", error);
+      }
+    };
+    fetchAttendance();
+  }, []);
+
   const handleChange = (index, value) => {
     // 숫자만 입력 허용
     if (/^\d*$/.test(value)) {
@@ -14,9 +94,28 @@ const Attendance = () => {
       setAttendanceCode(userCodes);
     }
   };
-  const handleSubmit = () => {
-    console.log("제출된 출석 코드: ", attendanceCode[0]);
-    // 서버 요청 등 추가 작업
+  const handleSubmit = async () => {
+    try {
+      const user = JSON.parse(localStorage.getItem("user"));
+      const userId = user?.id;
+      if (!userId) return;
+
+      // 출석체크 서버에 반영
+      const res = await axios.post("/api/attendance/mark", {
+        userId,
+        code: attendanceCode[0],
+      });
+
+      if (res.data.success) {
+        alert("출석이 성공적으로 처리되었습니다!");
+        fetchAttendance(); // 서버 출석체크 전달 후 UI 반영
+      } else {
+        alert(res.data.message);
+      }
+    } catch (error) {
+      console.error("출석 제출 실패:", error);
+      alert("출석 제출 중 오류 발생!");
+    }
   };
 
   return (
@@ -49,11 +148,9 @@ const Attendance = () => {
         </div>
       </div>
       <div className={styles.attend_week_container}>
-        <AttendanceWeekInfo week={1} />
-        <AttendanceWeekInfo week={2} />
-        <AttendanceWeekInfo week={3} />
-        <AttendanceWeekInfo week={4} />
-        <AttendanceWeekInfo week={5} />
+        {attendanceData.map(({ week, classes }) => (
+          <AttendanceWeekInfo key={week} week={week} classes={classes} />
+        ))}
       </div>
     </div>
   );
diff --git a/frontend/src/components/AttendanceWeekInfo.jsx b/frontend/src/components/AttendanceWeekInfo.jsx
index 2bae09c..10f1b3b 100644
--- a/frontend/src/components/AttendanceWeekInfo.jsx
+++ b/frontend/src/components/AttendanceWeekInfo.jsx
@@ -1,18 +1,14 @@
 import React from "react";
 import "./componentsCss/AttendanceWeekInfo.css";
 
-const AttendanceWeekInfo = ({ week }) => {
+const AttendanceWeekInfo = ({ week, classes }) => {
   return (
     <div className="eachWeekInfo">
       <p className="weekInfo">{week}주차</p>
       <div className="coin_img_container">
-        <img src="/assets/img/full_coin_green.png" />
-      </div>
-      <div className="coin_img_container">
-        <img src="/assets/img/two_coin_yellow.png" />
-      </div>
-      <div className="coin_img_container">
-        <img src="/assets/img/one_coin_yellow.png" />
+        {classes.map((cls, idx) => (
+          <img key={idx} src={cls.image} alt={`${idx + 1}번째 수업`} />
+        ))}
       </div>
     </div>
   );