diff --git a/src/app/register/RegisterForm.tsx b/src/app/register/RegisterForm.tsx
index 2610ca7..96236f3 100644
--- a/src/app/register/RegisterForm.tsx
+++ b/src/app/register/RegisterForm.tsx
@@ -1,12 +1,12 @@
 "use client";
 
-import { useMemo, useState } from "react";
+import { useMemo, useState, useEffect } from "react";
 import Link from "next/link";
 import LoginCheckboxActiveSvg from "@/app/svgs/logincheckboxactivesvg";
 import LoginCheckboxInactiveSvg from "@/app/svgs/logincheckboxinactivesvg";
 import LoginInputSvg from "@/app/svgs/inputformx";
 
-type Gender = "male" | "female" | "";
+type Gender = "MALE" | "FEMALE" | "";
 
 type RegisterFormProps = {
 	onOpenDone: () => void;
@@ -73,10 +73,129 @@ export default function RegisterForm({ onOpenDone, onOpenCodeError }: RegisterFo
 		return Object.keys(nextErrors).length === 0;
 	}
 
-	function handleSubmit(e: React.FormEvent<HTMLFormElement>) {
+	// 입력 필드가 유효해지면 해당 필드의 에러를 자동으로 지움
+	useEffect(() => {
+		setErrors((prev) => {
+			const next = { ...prev };
+			if (name.trim().length > 0 && prev.name) delete next.name;
+			if (isPhoneValid && prev.phone) delete next.phone;
+			if (isEmailValid && prev.email) delete next.email;
+			if (isPasswordValid && prev.password) delete next.password;
+			if (isPasswordConfirmValid && prev.passwordConfirm) delete next.passwordConfirm;
+			if (gender !== "" && prev.gender) delete next.gender;
+			if (birthdate.trim().length > 0 && prev.birthdate) delete next.birthdate;
+			if (allAgree && prev.agreements) delete next.agreements;
+			return next;
+		});
+	}, [name, isPhoneValid, isEmailValid, isPasswordValid, isPasswordConfirmValid, gender, birthdate, allAgree]);
+
+	async function handleSubmit(e: React.FormEvent<HTMLFormElement>) {
+		console.log("handleSubmit");
 		e.preventDefault();
 		if (!validateAll()) return;
-		onOpenDone();
+		await RegisterUser();
+	}
+
+	async function verifyEmailCode() {
+		try{
+			const response = await fetch(
+				"https://hrdi.coconutmeet.net/auth/verify-email/confirm",
+				{
+					method: "POST",	headers: {"Content-Type": "application/json",},	
+					body: JSON.stringify({email: email,emailCode: emailCode})
+			});
+			if (!response.ok) {
+				console.error("이메일 인증번호 검증 실패:", response.statusText);
+				onOpenCodeError();
+				return;
+			}
+			// 인증 성공 시 상태 업데이트
+			setEmailCodeVerified(true);
+		}
+		catch(error){
+			console.error("이메일 인증번호 검증 오류:", error);
+			onOpenCodeError();
+		}
+	}
+
+
+	async function sendEmailCode() {
+		
+		if (!isEmailValid) return;
+		// INSERT_YOUR_CODE
+		try {
+			const response = await fetch(
+				"https://hrdi.coconutmeet.net/auth/verify-email/send",
+				{ 
+					method: "POST",
+				    headers: {"Content-Type": "application/json",},
+				    body: JSON.stringify({email: email})
+				}
+			);
+			if (!response.ok) {
+				console.error("이메일 인증번호 전송 실패:", response.statusText);
+				alert("인증번호 전송실패");
+				return;
+			}
+			// 성공 시에만 상태 업데이트
+			setEmailCodeSent(true);
+			setEmailCode("");
+			setEmailCodeVerified(false);
+		} catch (error) {
+			console.error("이메일 인증번호 전송 오류:", error);
+			alert("인증번호 전송실패");
+			return;
+		}
+	}
+
+	async function RegisterUser() {
+		if (!emailCodeVerified) {
+			onOpenCodeError("이메일 인증을 완료해주세요.");
+			return false;
+		}
+		try {
+			const response = await fetch("https://hrdi.coconutmeet.net/auth/signup", {
+				method: "POST",
+				headers: {"Content-Type": "application/json",},
+				body: JSON.stringify({
+					email: email, 
+					emailCode: emailCode, 
+					password: password, 
+					passwordConfirm: passwordConfirm, 
+					name: name, 
+					phone: phone, 
+					gender: gender, 
+					birthDate: birthdate
+				})
+			});
+			if (!response.ok) {
+				let errorMessage = `회원가입 실패 (${response.status})`;
+				try {
+					const errorData = await response.json();
+					if (errorData.error) {
+						errorMessage = errorData.error;
+					} else if (errorData.message) {
+						errorMessage = errorData.message;
+					} else if (response.statusText) {
+						errorMessage = `${response.statusText} (${response.status})`;
+					}
+				} catch (parseError) {
+					if (response.statusText) {
+						errorMessage = `${response.statusText} (${response.status})`;
+					}
+				}
+				console.error("회원가입 실패:", errorMessage);
+				onOpenCodeError(errorMessage);
+				return false;
+			}
+			onOpenDone();
+			return true;
+		} catch (error) {
+			const errorMessage = error instanceof Error ? error.message : "네트워크 오류가 발생했습니다.";
+			console.error("회원가입 오류:", errorMessage);
+			onOpenCodeError(errorMessage);
+			return false;
+		}
 	}
 
 	return (
@@ -87,7 +206,6 @@ export default function RegisterForm({ onOpenDone, onOpenCodeError }: RegisterFo
 					회원가입
 				</div>
 			</div>
-
 			<form onSubmit={handleSubmit} className="space-y-6">
 				{/* 이름 */}
 				<div className="space-y-2">
@@ -161,9 +279,10 @@ export default function RegisterForm({ onOpenDone, onOpenCodeError }: RegisterFo
 								onFocus={() => setFocused((p) => ({ ...p, email: true }))}
 								onBlur={() => setFocused((p) => ({ ...p, email: false }))}
 								placeholder="이메일을 입력해 주세요."
-								className="h-[40px] px-[12px] py-[7px] w-full rounded-[8px] border border-neutral-40 focus:outline-none focus:border-neutral-700 text-[18px] text-neutral-700 placeholder:text-input-placeholder-text pr-[40px]"
+								disabled={emailCodeVerified}
+								className="h-[40px] px-[12px] py-[7px] w-full rounded-[8px] border border-neutral-40 focus:outline-none focus:border-neutral-700 text-[18px] text-neutral-700 placeholder:text-input-placeholder-text pr-[40px] disabled:bg-gray-100 disabled:cursor-not-allowed"
 							/>
-							{email.trim().length > 0 && focused.email && (
+							{email.trim().length > 0 && focused.email && !emailCodeVerified && (
 								<button
 									type="button"
 									onMouseDown={(e) => { e.preventDefault(); setEmail(""); }}
@@ -176,15 +295,9 @@ export default function RegisterForm({ onOpenDone, onOpenCodeError }: RegisterFo
 						</div>
 						<button
 							type="button"
-							disabled={!isEmailValid}
-							className={`h-[40px] px-[12px] rounded-[8px] text-[16px] font-semibold ${isEmailValid ? "bg-inactive-button text-white" : "bg-gray-50 text-input-placeholder-text"}`}
-							onClick={() => {
-								if (!isEmailValid) return;
-								alert("인증번호 전송 (가상 동작)");
-								setEmailCodeSent(true);
-								setEmailCode("");
-								setEmailCodeVerified(false);
-							}}
+							disabled={!isEmailValid || emailCodeVerified}
+							className={`h-[40px] px-[12px] rounded-[8px] text-[16px] font-semibold ${isEmailValid && !emailCodeVerified ? "bg-inactive-button text-white" : "bg-gray-50 text-input-placeholder-text"}`}
+							onClick={sendEmailCode}
 						>
 							인증번호 전송
 						</button>
@@ -207,7 +320,8 @@ export default function RegisterForm({ onOpenDone, onOpenCodeError }: RegisterFo
 										onFocus={() => setFocused((p) => ({ ...p, emailCode: true }))}
 										onBlur={() => setFocused((p) => ({ ...p, emailCode: false }))}
 										placeholder="인증번호 6자리"
-										className="h-[40px] px-[12px] py-[7px] w-full rounded-[8px] border border-neutral-40 focus:outline-none focus:border-neutral-700 text-[18px] text-neutral-700 placeholder:text-input-placeholder-text pr-[40px]"
+										disabled={emailCodeVerified}
+										className="h-[40px] px-[12px] py-[7px] w-full rounded-[8px] border border-neutral-40 focus:outline-none focus:border-neutral-700 text-[18px] text-neutral-700 placeholder:text-input-placeholder-text pr-[40px] disabled:bg-gray-100 disabled:cursor-not-allowed"
 									/>
 									{emailCode.trim().length > 0 && focused.emailCode && !emailCodeVerified && (
 										<button
@@ -224,18 +338,22 @@ export default function RegisterForm({ onOpenDone, onOpenCodeError }: RegisterFo
 									type="button"
 									disabled={emailCodeVerified}
 									className={`h-[40px] px-[12px] rounded-[8px] text-[16px] font-semibold ${!emailCodeVerified ? "bg-active-button text-white" : "bg-gray-50 text-input-placeholder-text"}`}
-									onClick={() => {
-										// 가상 검증: 6자리면 성공, 아니면 에러 모달
-										if (emailCode.length !== 6) {
-											onOpenCodeError();
-											return;
-										}
-										setEmailCodeVerified(true);
-									}}
+									onClick={verifyEmailCode}
 								>
 									{emailCodeVerified ? "인증완료" : "인증하기"}
 								</button>
 							</div>
+							<p className="text-[13px] leading-[normal] text-[#384fbf]">
+								{emailCodeVerified ? (
+									"인증이 완료됐습니다"
+								) : (
+									<>
+										인증 확인을 위해 작성한 이메일로 인증번호를 발송했습니다.
+										<br />
+										이메일을 확인해 주세요.
+									</>
+								)}
+							</p>
 						</div>
 					)}
 				</div>
@@ -306,13 +424,13 @@ export default function RegisterForm({ onOpenDone, onOpenCodeError }: RegisterFo
 							<input
 								type="radio"
 								name="gender"
-								value="male"
-								checked={gender === "male"}
-								onChange={() => setGender("male")}
+								value="MALE"
+								checked={gender === "MALE"}
+								onChange={() => setGender("MALE")}
 								className="sr-only"
 							/>
-							<span className={`inline-block rounded-full size-[18px] border ${gender === "male" ? "border-active-button" : "border-[#8c95a1]"}`}>
-								{gender === "male" && <span className="block size-[9px] rounded-full bg-active-button m-[4.5px]" />}
+							<span className={`inline-block rounded-full size-[18px] border ${gender === "MALE" ? "border-active-button" : "border-[#8c95a1]"}`}>
+								{gender === "MALE" && <span className="block size-[9px] rounded-full bg-active-button m-[4.5px]" />}
 							</span>
 							남성
 						</label>
@@ -320,13 +438,13 @@ export default function RegisterForm({ onOpenDone, onOpenCodeError }: RegisterFo
 							<input
 								type="radio"
 								name="gender"
-								value="female"
-								checked={gender === "female"}
-								onChange={() => setGender("female")}
+								value="FEMALE"
+								checked={gender === "FEMALE"}
+								onChange={() => setGender("FEMALE")}
 								className="sr-only"
 							/>
-							<span className={`inline-block rounded-full size-[18px] border ${gender === "female" ? "border-active-button" : "border-[#8c95a1]"}`}>
-								{gender === "female" && <span className="block size-[9px] rounded-full bg-active-button m-[4.5px]" />}
+							<span className={`inline-block rounded-full size-[18px] border ${gender === "FEMALE" ? "border-active-button" : "border-[#8c95a1]"}`}>
+								{gender === "FEMALE" && <span className="block size-[9px] rounded-full bg-active-button m-[4.5px]" />}
 							</span>
 							여성
 						</label>
diff --git a/src/app/register/page.tsx b/src/app/register/page.tsx
index e28f52f..a945344 100644
--- a/src/app/register/page.tsx
+++ b/src/app/register/page.tsx
@@ -14,6 +14,7 @@ export default function RegisterPage() {
 	return (
 		<>
 			<div className="min-h-screen w-full flex flex-col items-center justify-between">
+				
 				<RegisterForm
 					onOpenDone={() => setDoneOpen(true)}
 					onOpenCodeError={(msg) => {
@@ -21,6 +22,7 @@ export default function RegisterPage() {
 						setCodeErrorOpen(true);
 					}}
 				/>
+
 				<RegisterOption
 					doneOpen={doneOpen}
 					setDoneOpen={setDoneOpen}