diff --git a/src/common/apis/member.tsx b/src/common/apis/member.tsx
index a05ce40..53dc735 100644
--- a/src/common/apis/member.tsx
+++ b/src/common/apis/member.tsx
@@ -33,4 +33,9 @@ export const handleKakaoLogin = () =>
     location.href = `${import.meta.env.VITE_SERVER_URL}/oauth2/authorization/kakao`;
 
 export const getProfile = async () =>
-    await axiosApi.get("/member/profile");
\ No newline at end of file
+    await axiosApi.get("/member/profile");
+
+export const updateUsername = async (username: string) =>
+    await axiosApi.post("/member/username", {
+        username: username,
+    });
\ No newline at end of file
diff --git a/src/common/slices/loginSlice.tsx b/src/common/slices/loginSlice.tsx
index 6b84a14..5e2ec99 100644
--- a/src/common/slices/loginSlice.tsx
+++ b/src/common/slices/loginSlice.tsx
@@ -1,11 +1,11 @@
 import {createSlice} from "@reduxjs/toolkit";
 
 const initialState = {
-    isLogin: true,
-    accessToken: "token",
-    email: "diglog@example.com",
-    username: "diglog",
-    roles: ["ROLE_USER"],
+    isLogin: false,
+    accessToken: "",
+    email: "",
+    username: "",
+    roles: [],
 }
 
 const loginSlice = createSlice({
diff --git a/src/common/util/regex.tsx b/src/common/util/regex.tsx
index fc95398..a66be20 100644
--- a/src/common/util/regex.tsx
+++ b/src/common/util/regex.tsx
@@ -1,10 +1,11 @@
 export const checkEmail = (email: string) => {
     const regex = /^[^\s@]+@[^\s@]+\.[^\s@]+$/;
-    return email !== "" && email.match(regex);
+
+    return !!(email !== "" && email.match(regex));
 }
 
 export const checkPassword = (password: string) => {
     const regex = /^(?=.*[A-Za-z])(?=.*\d)[A-Za-z\d\W_]{8,16}$/;
 
-    return password !== "" && password.match(regex);
+    return !!(password !== "" && password.match(regex));
 }
\ No newline at end of file
diff --git a/src/components/member/LoginButton.tsx b/src/components/member/LoginButton.tsx
index 3167e69..640398f 100644
--- a/src/components/member/LoginButton.tsx
+++ b/src/components/member/LoginButton.tsx
@@ -1,17 +1,17 @@
 import {ReactNode} from "react";
 
-function LoginButton({text, onClick, bgColor, icon}: {
+function LoginButton({text, onClick, bgColor, disable, icon}: {
     text: string,
     onClick: () => void,
     bgColor: string,
+    disable?: boolean,
     icon?: ReactNode
 }) {
     return (
         <button onClick={onClick}
-                className={`rounded-[calc(12px)] ${bgColor} w-full h-14 flex gap-x-2 justify-center items-center hover:brightness-105 hover:cursor-pointer`}>
-            {(icon) ? icon : <div></div>}
+                className={`rounded-[calc(12px)] ${bgColor} ${disable && "opacity-40 hover:!cursor-auto"} w-full h-14 flex gap-x-2 justify-center items-center hover:brightness-105 hover:cursor-pointer cursor`}>
+            {(icon) ? icon : null}
             <div>{text}</div>
-            <div></div>
         </button>
     );
 }
diff --git a/src/components/member/LoginTextField.tsx b/src/components/member/LoginTextField.tsx
index e41c4d2..7ac5131 100644
--- a/src/components/member/LoginTextField.tsx
+++ b/src/components/member/LoginTextField.tsx
@@ -1,11 +1,13 @@
 import * as React from "react";
 
-function LoginTextField({label, type, placeholder, value, setValue, onKeyDown}: {
+function LoginTextField({label, type, placeholder, value, setValue, error, isError, onKeyDown}: {
     label?: string,
     type: string,
     placeholder: string,
     value: string,
     setValue: (value: string) => void,
+    error?: string,
+    isError?: boolean,
     onKeyDown?: (event: React.KeyboardEvent<HTMLInputElement>) => void,
 }) {
     return (
@@ -19,6 +21,11 @@ function LoginTextField({label, type, placeholder, value, setValue, onKeyDown}:
                    value={value}
                    onChange={(event => setValue(event.target.value))}
                    onKeyDown={onKeyDown}/>
+            {(error) && (
+                isError ?
+                    <p className="h-4 mt-2 text-sm text-red-600">{error}</p>
+                    : <div className="h-4 mt-2"/>
+            )}
         </div>
     );
 }
diff --git a/src/layout/LoadingLayout.tsx b/src/layout/LoadingLayout.tsx
index 36509ef..0dfa856 100644
--- a/src/layout/LoadingLayout.tsx
+++ b/src/layout/LoadingLayout.tsx
@@ -3,7 +3,7 @@ function LoadingLayout({loading}: { loading: boolean }) {
     return (
         loading &&
         <div
-            className="fixed inset-0 flex items-center justify-center bg-gray-300 bg-opacity-50 z-1000 dark:bg-gray-100 dark:bg-opacity-50">
+            className="fixed inset-0 flex items-center justify-center bg-gray-300 opacity-50 z-1000 dark:bg-gray-100 dark:bg-opacity-50">
             <div role="status">
                 <svg aria-hidden="true"
                      className="inline w-8 h-8 text-gray-200 animate-spin dark:text-gray-600 fill-gray-600 dark:fill-gray-300"
diff --git a/src/pages/member/CodePage.tsx b/src/pages/member/CodePage.tsx
index 5eaed50..b0ecab0 100644
--- a/src/pages/member/CodePage.tsx
+++ b/src/pages/member/CodePage.tsx
@@ -3,6 +3,7 @@ import BasicLayout from "../../layout/BasicLayout.tsx";
 import {useLocation, useNavigate} from "react-router-dom";
 import {formatTimer} from "../../common/util/date.tsx";
 import LoadingLayout from "../../layout/LoadingLayout.tsx";
+import {checkCode} from "../../common/apis/member.tsx";
 
 function CodePage() {
 
@@ -63,7 +64,12 @@ function CodePage() {
         if (code[5] !== "") {
             setLoading(true);
 
-            navigate("/signup", {state: {email: email, code: code.join("")}});
+            checkCode(email, code.join(""))
+                .then(() => {
+                    navigate("/signup", {state: {email: email, code: code.join("")}});
+                })
+                .catch((error) => alert(error.response.data.message))
+                .finally(() => setLoading(false));
         }
     }, [code]);
 
diff --git a/src/pages/member/EmailPage.tsx b/src/pages/member/EmailPage.tsx
index e834a00..3eea84b 100644
--- a/src/pages/member/EmailPage.tsx
+++ b/src/pages/member/EmailPage.tsx
@@ -5,10 +5,13 @@ import LoginButton from "../../components/member/LoginButton.tsx";
 import {useNavigate} from "react-router-dom";
 import * as React from "react";
 import {checkEmail} from "../../common/util/regex.tsx";
+import {sendMail} from "../../common/apis/member.tsx";
+import LoadingLayout from "../../layout/LoadingLayout.tsx";
 
 function EmailPage() {
 
-    const [signupInfo, setSignupInfo] = useState({email: "", code: "", password: ""});
+    const [loading, setLoading] = useState(false);
+    const [email, setEmail] = useState("");
 
     const navigate = useNavigate();
 
@@ -21,12 +24,18 @@ function EmailPage() {
     }
 
     const handleVerifyEmail = () => {
-        if (!checkEmail(signupInfo.email)) {
-            alert("이메일 형식을 확인해주세요.");
+        if (!checkEmail(email)) {
+            alert("이메일 형식에 맞게 입력해주세요.");
             return;
         }
-
-        navigate("/signup/code", {state: {email: signupInfo.email}});
+        setLoading(true);
+
+        sendMail(email)
+            .then(() => {
+                navigate("/signup/code", {state: {email: email}});
+            })
+            .catch((error) => alert(error.response.data.message))
+            .finally(() => setLoading(false));
     }
 
     return (
@@ -37,11 +46,12 @@ function EmailPage() {
                     label={"이메일"}
                     type={"email"}
                     placeholder={"diglog@example.com"}
-                    value={signupInfo.email}
-                    setValue={(value) => setSignupInfo({...signupInfo, email: value})}
+                    value={email}
+                    setValue={(value) => setEmail(value)}
                     onKeyDown={handleEmailEnter}/>
-                <LoginButton text={"인증코드 전송"} onClick={handleVerifyEmail} bgColor={"bg-lime-400"}/>
+                <LoginButton text={"인증코드 전송"} onClick={handleVerifyEmail} disable={!checkEmail(email)} bgColor={"bg-lime-400"}/>
             </div>
+            <LoadingLayout loading={loading}/>
         </BasicLayout>
     );
 }
diff --git a/src/pages/member/SignupPage.tsx b/src/pages/member/SignupPage.tsx
index b5aa726..75a0f7a 100644
--- a/src/pages/member/SignupPage.tsx
+++ b/src/pages/member/SignupPage.tsx
@@ -6,6 +6,7 @@ import {checkPassword} from "../../common/util/regex.tsx";
 import LoadingLayout from "../../layout/LoadingLayout.tsx";
 import * as React from "react";
 import LoginButton from "../../components/member/LoginButton.tsx";
+import {signup} from "../../common/apis/member.tsx";
 
 function SignupPage() {
 
@@ -25,17 +26,29 @@ function SignupPage() {
     }
 
     const handleSignup = () => {
-        setLoading(true);
-        console.log(email, code);
-
-        if (!checkPassword(passwordInfo.password) || passwordInfo.password !== passwordInfo.confirmPassword) {
-            setLoading(false);
+        if (!checkPassword(passwordInfo.password)) {
+            alert("비밀번호가 영문, 숫자 포함 8-16자리가 되도록 입력해주세요.");
+            return;
+        }
+        
+        if (passwordInfo.password !== passwordInfo.confirmPassword) {
+            alert("비밀번호 확인이 일치하지 않습니다.");
             return;
         }
 
-        alert("회원가입 되었습니다.");
+        setLoading(true);
+
+        signup(email, passwordInfo.password, code)
+            .then(() => {
+                alert("회원가입 되었습니다.");
+                navigate("/login");
+            })
+            .catch((error) => alert(error.response.data.message))
+            .finally(() => setLoading(false));
+    }
 
-        navigate("/login");
+    const disableSignupButton = () => {
+        return !checkPassword(passwordInfo.password) || (passwordInfo.password !== passwordInfo.confirmPassword);
     }
 
     return (
@@ -58,12 +71,11 @@ function SignupPage() {
                         setValue={(value) => setPasswordInfo({...passwordInfo, confirmPassword: value})}
                         onKeyDown={handlePasswordEnter}/>
                 </div>
-                <LoginButton text={"회원가입"} onClick={handleSignup} bgColor={"bg-lime-400"}/>
+                <LoginButton text={"회원가입"} onClick={handleSignup} disable={disableSignupButton()} bgColor={"bg-lime-400"}/>
             </div>
             <LoadingLayout loading={loading}/>
         </BasicLayout>
-    )
-        ;
+    );
 }
 
 export default SignupPage;
\ No newline at end of file
diff --git a/src/pages/setting/ProfileSettingPage.tsx b/src/pages/setting/ProfileSettingPage.tsx
index 3c382d8..92942d4 100644
--- a/src/pages/setting/ProfileSettingPage.tsx
+++ b/src/pages/setting/ProfileSettingPage.tsx
@@ -6,6 +6,7 @@ import {ChangeEvent, useRef, useState} from "react";
 import {FillButton} from "../../components/common/FillButton.tsx";
 import {setUsername} from "../../common/slices/loginSlice.tsx";
 import {TextButton} from "../../components/common/TextButton.tsx";
+import {updateUsername} from "../../common/apis/member.tsx";
 
 function ProfileSettingPage() {
 
@@ -13,7 +14,7 @@ function ProfileSettingPage() {
     const dispatch = useDispatch();
     const fileInputRef = useRef<HTMLInputElement>(null);
 
-    const [input, setInput] = useState("");
+    const [input, setInput] = useState(loginState.username);
     const [image, setImage] = useState<string | null>(null);
     const [isUsernameEdit, setIsUsernameEdit] = useState(false);
     const [isImageEdit, setIsImageEdit] = useState(false);
@@ -27,11 +28,18 @@ function ProfileSettingPage() {
     }
 
     const handleUsernameSubmit = () => {
-        alert("변경되었습니다.");
-        dispatch(setUsername({
-            username: input,
-        }));
-        setIsUsernameEdit(false);
+
+        updateUsername(input)
+            .then(() => {
+                alert("변경되었습니다.");
+                dispatch(setUsername({
+                    username: input,
+                }));
+                setIsUsernameEdit(false);
+            })
+            .catch((error) => alert(error.response.data.message))
+            .finally(() => {
+            });
     }
 
     const handleImageEdit = () => {