diff --git a/src/pages/dashboard/ui/EventInfoPage.tsx b/src/pages/dashboard/ui/EventInfoPage.tsx
index ffaf4686..281503c3 100644
--- a/src/pages/dashboard/ui/EventInfoPage.tsx
+++ b/src/pages/dashboard/ui/EventInfoPage.tsx
@@ -1,4 +1,5 @@
 import { useEffect, useState } from 'react';
+import { useQueryClient } from '@tanstack/react-query';
 import ChoiceChip from '../../../../design-system/ui/ChoiceChip';
 import DefaultTextField from '../../../../design-system/ui/textFields/DefaultTextField';
 import EventDatePicker from '../../../features/event/ui/DatePicker';
@@ -10,7 +11,7 @@ import { AddressSearch } from '../../../shared/ui/AddressSearch';
 import KakaoMap from '../../../shared/ui/KakaoMap';
 import { UpdateEventRequest } from '../../../features/dashboard/model/event';
 import { useEventDetail } from '../../../entities/event/hook/useEventHook';
-import { useQueryClient } from '@tanstack/react-query';
+import { formatPhoneNumber } from '../../../shared/utils/phoneFormatter';
 
 const EventInfoPage = () => {
   const queryClient = useQueryClient();
@@ -54,7 +55,7 @@ const EventInfoPage = () => {
       category: data.result.category || 'DEVELOPMENT_STUDY',
       hashtags: data.result.hashtags || [],
       organizerEmail: email || data.result.organizerEmail || '',
-      organizerPhoneNumber: phone || data.result.organizerPhoneNumber || '',
+      organizerPhoneNumber: phone.replace(/-/g, '') || data.result.organizerPhoneNumber || '',
     };
 
     mutate(requestData, {
@@ -113,10 +114,10 @@ const EventInfoPage = () => {
         />
         <DefaultTextField
           label="주최자 연락처"
-          placeholder="01012345678(‘-’를 제외한 숫자만 입력해주세요)"
+          placeholder="010-1234-5678"
           className="h-12"
           value={phone}
-          onChange={e => setPhone(e.target.value)}
+          onChange={e => setPhone(formatPhoneNumber(e.target.value))}
         />
         <ChoiceChip
           label="온라인/오프라인 여부"
diff --git a/src/pages/event/ui/create-event/EventOrganizerInfoPage.tsx b/src/pages/event/ui/create-event/EventOrganizerInfoPage.tsx
index df8faa5c..26c847cc 100644
--- a/src/pages/event/ui/create-event/EventOrganizerInfoPage.tsx
+++ b/src/pages/event/ui/create-event/EventOrganizerInfoPage.tsx
@@ -3,6 +3,7 @@ import { useForm } from 'react-hook-form';
 import UnderlineTextField from '../../../../../design-system/ui/textFields/UnderlineTextField';
 import { useFunnelState } from '../../../../features/event/model/FunnelContext';
 import { OrganizerFormData, organizerZodValidation } from '../../../../shared/lib/formValidation';
+import { formatPhoneNumber } from '../../../../shared/utils/phoneFormatter';
 
 interface EventOrganizerInfoPageProps {
   onValidationChange?: (isValid: boolean) => void;
@@ -13,6 +14,7 @@ const EventOrganizerInfoPage = ({ onValidationChange }: EventOrganizerInfoPagePr
 
   const {
     register,
+    setValue,    
     watch,
     formState: { errors, isValid },
   } = useForm<OrganizerFormData>({
@@ -27,6 +29,11 @@ const EventOrganizerInfoPage = ({ onValidationChange }: EventOrganizerInfoPagePr
   const phoneValue = watch('phone');
   const emailValue = watch('email');
 
+  const handlePhoneChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const formatted = formatPhoneNumber(e.target.value);
+    setValue('phone', formatted, { shouldValidate: true });
+  };
+
   useEffect(() => {
     onValidationChange?.(isValid);
   }, [isValid, onValidationChange]);
@@ -50,12 +57,13 @@ const EventOrganizerInfoPage = ({ onValidationChange }: EventOrganizerInfoPagePr
         {...register('email')}
       />
       <UnderlineTextField
-        label="전화번호"
-        placeholder={`"-"를 포함하여 입력해주세요`}
+        label="연락처"
+        placeholder="010-1234-5678"
         type="tel"
         errorMessage={errors.phone?.message}
         className="w-full"
-        {...register('phone')}
+        value={phoneValue}
+        onChange={handlePhoneChange}
       />
     </div>
   );
diff --git a/src/pages/join/InfoInputPage.tsx b/src/pages/join/InfoInputPage.tsx
index 1418fa0f..cc8f574c 100644
--- a/src/pages/join/InfoInputPage.tsx
+++ b/src/pages/join/InfoInputPage.tsx
@@ -1,12 +1,13 @@
+import { useEffect } from 'react';
+import { useNavigate } from 'react-router-dom';
 import { useForm, SubmitHandler } from 'react-hook-form';
 import Header from '../../../design-system/ui/Header';
 import Button from '../../../design-system/ui/Button';
 import UnderlineTextField from '../../../design-system/ui/textFields/UnderlineTextField';
-import { useNavigate } from 'react-router-dom';
 import { FormData, zodValidation } from '../../shared/lib/formValidation';
 import { useUserInfo, useUserUpdate } from '../../features/join/hooks/useUserHook';
 import useAuthStore from '../../app/provider/authStore';
-import { useEffect } from 'react';
+import { formatPhoneNumber } from '../../shared/utils/phoneFormatter';
 
 const InfoInputPage = () => {
   const { data, isLoading } = useUserInfo();
@@ -17,6 +18,8 @@ const InfoInputPage = () => {
     handleSubmit,
     formState: { errors, isValid },
     reset,
+    setValue,
+    watch,
   } = useForm<FormData>({
     mode: 'onChange',
     defaultValues: {
@@ -28,20 +31,27 @@ const InfoInputPage = () => {
   });
   const navigate = useNavigate();
 
+  const phoneValue = watch('phone');
+
+  const handlePhoneChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    const formatted = formatPhoneNumber(e.target.value);
+    setValue('phone', formatted, { shouldValidate: true });
+  };
+
   const onSubmit: SubmitHandler<FormData> = formData => {
     const updatedData = {
-      name: data?.name || "",
-      email: data?.email || "",
+      name: data?.name || '',
+      email: data?.email || '',
       phoneNumber: formData.phone,
     };
     updateUser(updatedData, {
       onSuccess: () => {
         login();
-        setName(data?.name || "사용자");
+        setName(data?.name || '사용자');
         alert('정보가 성공적으로 업데이트되었습니다.');
         navigate('/');
       },
-      onError: (err) => {
+      onError: err => {
         alert('정보 업데이트에 실패했습니다. 다시 시도해주세요.');
         console.error(err);
       },
@@ -81,11 +91,12 @@ const InfoInputPage = () => {
         {/* 연락처 필드 */}
         <UnderlineTextField
           label="연락처"
-          placeholder={"전화번호를 010-1234-5678 형식으로 입력해주세요."}
+          placeholder={'연락처'}
           type="tel"
           errorMessage={errors.phone?.message}
           className="text-xl"
-          {...register('phone')}
+          value={phoneValue}
+          onChange={handlePhoneChange}
         />
 
         {/* 이메일 필드 */}
diff --git a/src/shared/lib/formValidation.ts b/src/shared/lib/formValidation.ts
index b356962d..100b88f5 100644
--- a/src/shared/lib/formValidation.ts
+++ b/src/shared/lib/formValidation.ts
@@ -9,10 +9,7 @@ export const formSchema = z.object({
     .regex(/^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,4}$/, '올바른 이메일 형식이어야 합니다.'),
   phone: z
     .string()
-    .regex(/^[0-9]{3}-[0-9]{3,4}-[0-9]{4}$/, '연락처는 하이픈(-)을 포함한 형식이어야 합니다.')
-    .refine(val => val.length === 13, {
-      message: '연락처는 하이픈(-) 포함 13자 형식(예: 010-1234-5678)이어야 합니다.',
-    }),
+    .regex(/^[0-9]{3}-[0-9]{3,4}-[0-9]{4}$/, '연락처는 휴대전화 번호 형식(예: 010-1234-5678)이어야 합니다.')
 });
 export const organizerFormSchema = formSchema.pick({ email: true, phone: true });
 export const eventTitleSchema = z.object({
diff --git a/src/shared/utils/phoneFormatter.ts b/src/shared/utils/phoneFormatter.ts
new file mode 100644
index 00000000..091de0d5
--- /dev/null
+++ b/src/shared/utils/phoneFormatter.ts
@@ -0,0 +1,6 @@
+export const formatPhoneNumber = (value: string) => {
+  const numbers = value.replace(/[^\d]/g, '').slice(0, 11); // 11자리까지만 허용
+  if (numbers.length <= 3) return numbers;
+  if (numbers.length <= 7) return `${numbers.slice(0, 3)}-${numbers.slice(3)}`;
+  return `${numbers.slice(0, 3)}-${numbers.slice(3, 7)}-${numbers.slice(7, 11)}`;
+};
\ No newline at end of file