diff --git a/src/api/types/auth.ts b/src/api/types/auth.ts
index 3859a66..6cb7d89 100644
--- a/src/api/types/auth.ts
+++ b/src/api/types/auth.ts
@@ -24,7 +24,7 @@ export interface IPhoneNumber {
 }
 
 export interface IPhoneAuth extends IPhoneNumber {
-  code: number;
+  code: string;
 }
 
 export interface IUserInfo {
@@ -43,12 +43,12 @@ export interface IEmail {
   emailAddress: string;
 }
 export interface IEmailAuth extends IEmail {
-  code: number;
+  code: string;
 }
 
 export interface IEmailAuth2 {
   emailAddress: string;
-  code: number;
+  code: string;
 }
 
 export interface ITokenRefresh {
diff --git a/src/components/findpassword/EmailCertification.tsx b/src/components/findpassword/EmailCertification.tsx
index 6b61aeb..6b9749c 100644
--- a/src/components/findpassword/EmailCertification.tsx
+++ b/src/components/findpassword/EmailCertification.tsx
@@ -28,7 +28,7 @@ const EmailCertification = ({ setStep }: EmailCertificationProps) => {
   });
 
   const { mutateAsync: emailVerify } = useMutation(
-    ({ emailAddress, code }: { emailAddress: string; code: number }) => {
+    ({ emailAddress, code }: { emailAddress: string; code: string }) => {
       return emailauthverify({ emailAddress, code });
     }
   );
@@ -117,7 +117,7 @@ const EmailCertification = ({ setStep }: EmailCertificationProps) => {
       try {
         const { status } = (await emailVerify({
           emailAddress: userEmail,
-          code: Number(validNumber)
+          code: validNumber
         })) as { status: string };
 
         if (status == 'SUCCESS') {
diff --git a/src/components/signup/EmailVerification.tsx b/src/components/signup/EmailVerification.tsx
index d6ac11a..7e3cde5 100644
--- a/src/components/signup/EmailVerification.tsx
+++ b/src/components/signup/EmailVerification.tsx
@@ -31,7 +31,7 @@ const EmailVerification = ({ onNext }: EmailVerification) => {
   });
 
   const { mutateAsync: emailVerify } = useMutation(
-    ({ emailAddress, code }: { emailAddress: string; code: number }) => {
+    ({ emailAddress, code }: { emailAddress: string; code: string }) => {
       return emailauthverify({ emailAddress, code });
     }
   );
@@ -80,7 +80,7 @@ const EmailVerification = ({ onNext }: EmailVerification) => {
       try {
         const { status } = (await emailVerify({
           emailAddress: userEmail,
-          code: Number(validNumber)
+          code: validNumber
         })) as { status: string };
 
         if (status == 'SUCCESS') {
diff --git a/src/components/signup/PhoneCertification.tsx b/src/components/signup/PhoneCertification.tsx
index b1a30fe..5a96f0c 100644
--- a/src/components/signup/PhoneCertification.tsx
+++ b/src/components/signup/PhoneCertification.tsx
@@ -30,7 +30,7 @@ const PhoneCertification = ({ onNext }: PhoneCertificationProps) => {
   });
 
   const { mutateAsync: phoneVerify } = useMutation(
-    ({ phoneNumber, code }: { phoneNumber: string; code: number }) => {
+    ({ phoneNumber, code }: { phoneNumber: string; code:string }) => {
       return phoneauthverify({ phoneNumber, code });
     }
   );
@@ -114,6 +114,8 @@ const PhoneCertification = ({ onNext }: PhoneCertificationProps) => {
 
     if (btnStatus == 'THIRD') {
       if (validNumber.length != 6) {
+        console.log(validNumber)
+        
         setValidNumber('');
         setErrorMessage('6자리 코드를 입력해주세요.');
         inputRef.current?.focus();
@@ -122,7 +124,7 @@ const PhoneCertification = ({ onNext }: PhoneCertificationProps) => {
       try {
         const { status } = await phoneVerify({
           phoneNumber: phoneNumber.replace(/-/g, ''),
-          code: Number(validNumber)
+          code: validNumber
         });
 
         if (status == 'SUCCESS') {
@@ -134,6 +136,9 @@ const PhoneCertification = ({ onNext }: PhoneCertificationProps) => {
         const select = signError.find((item) => item.errorCode === errorCode);
         if (select) {
           setErrorMessage(select.message);
+          console.log(validNumber);
+          console.log(parseInt(validNumber, 10));
+          console.log(Number(validNumber));
           setValidNumber('');
           inputRef.current?.focus();
           return;