diff --git a/design-system/ui/Button.tsx b/design-system/ui/Button.tsx
index ffcf330e..527acedc 100644
--- a/design-system/ui/Button.tsx
+++ b/design-system/ui/Button.tsx
@@ -3,11 +3,13 @@ interface ButtonProps {
   onClick: () => void; // 클릭 핸들러
   disabled?: boolean; // 비활성화 여부
   className?: string; // 추가 스타일링 클래스
+  type?: 'button' | 'submit' | 'reset';
 }
 
-const Button = ({ label, onClick, disabled = false, className = '' }: ButtonProps) => {
+const Button = ({ label, onClick, disabled = false, className = '', type = 'submit' }: ButtonProps) => {
   return (
     <button
+    type={type} 
       onClick={onClick}
       disabled={disabled}
       className={`py-2 px-4 text-white font-semibold transition text-base sm:text-xs md:text-sm lg:text-base
diff --git a/src/features/dashboard/api/participants.ts b/src/features/dashboard/api/participants.ts
index 9a198a44..72116303 100644
--- a/src/features/dashboard/api/participants.ts
+++ b/src/features/dashboard/api/participants.ts
@@ -20,3 +20,38 @@ export const approveParticipants = async ({ orderId }: { orderId: number }) => {
     console.log(error);
   }
 };
+
+export const downloadExcel = async (eventId:number): Promise<void> => {
+  const response = await axiosClient.get(
+    '/host-channels/dashboard/participant-management/excel',
+    {
+      responseType: 'blob',
+      params: { eventId }, 
+    }
+  );
+  console.log(response.headers)
+
+  //파일이름 추출
+  const disposition = response.headers['content-disposition'];
+let filename = '기본값.xlsx';
+if (disposition) {
+  const match = disposition.match(/filename\*=UTF-8''(.+)/);
+  if (match && match[1]) {
+    filename = decodeURIComponent(match[1]);
+  }
+}
+console.log(disposition)
+
+  //저장
+  const blob = new Blob([response.data], {
+    type: 'application/vnd.openxmlformats-officedocument.spreadsheetml.sheet',
+  });
+  const url = window.URL.createObjectURL(blob);
+  const link = document.createElement('a');
+  link.href = url;
+  link.setAttribute('download', filename); 
+  document.body.appendChild(link);
+  link.click();
+  link.remove();
+  window.URL.revokeObjectURL(url);
+};
\ No newline at end of file
diff --git a/src/features/dashboard/ui/PariticipantsList.tsx b/src/features/dashboard/ui/PariticipantsList.tsx
index fa5f7d80..0f44a939 100644
--- a/src/features/dashboard/ui/PariticipantsList.tsx
+++ b/src/features/dashboard/ui/PariticipantsList.tsx
@@ -72,7 +72,7 @@ const ParticipantsList = ({ listType, selectedFilter = [], participants }: Parti
           </div>
         </div>
         <div className="flex items-center gap-4">
-          <p>참여자 정보</p>
+          <p>옵션 응답</p>
           <p>체크인</p>
           <p className="mr-1 md:mr-2">승인</p>
         </div>
diff --git a/src/features/dashboard/ui/ParticipantCard.tsx b/src/features/dashboard/ui/ParticipantCard.tsx
index b0165157..539bb6e9 100644
--- a/src/features/dashboard/ui/ParticipantCard.tsx
+++ b/src/features/dashboard/ui/ParticipantCard.tsx
@@ -39,7 +39,9 @@ const ParticipantCard = ({ participant, onCheckClick }: ParticipantCardProps) =>
             <div>
               구매 일자: {formatDate(participant.purchaseDate)} {formatTime(participant.purchaseDate)}
             </div>
-            <p>티켓 이름: {participant.ticketName}</p>
+            <p className="max-w-[120px] truncate text-ellipsis whitespace-nowrap">
+              티켓 이름: {participant.ticketName}
+            </p>
           </div>
         </div>
       </div>
diff --git a/src/features/event/ui/EventFunnel.tsx b/src/features/event/ui/EventFunnel.tsx
index f0ea2158..6d6619fd 100644
--- a/src/features/event/ui/EventFunnel.tsx
+++ b/src/features/event/ui/EventFunnel.tsx
@@ -23,6 +23,10 @@ const EventFunnel = ({ onNext, Funnel, Step, currentStep }: EventFunnelInterface
   const location = useLocation();
   const [backPath] = useState(location.state?.backPath ?? '/');
 
+  //중복 클릭 방지
+  const [isSubmittingEvent, setIsSubmittingEvent] = useState(false);
+  const [isSubmittingHost, setIsSubmittingHost] = useState(false);
+
   const stepOrder = [
     StepNames.HostSelection,
     StepNames.HostCreation,
@@ -44,6 +48,8 @@ const EventFunnel = ({ onNext, Funnel, Step, currentStep }: EventFunnelInterface
     onNext(nextStep);
   };
   const handleCreateEvent = () => {
+    if (isSubmittingEvent) return;
+    setIsSubmittingEvent(true);
     createEvent(eventState, {
       onSuccess: () => {
         navigate('/menu/myHost');
@@ -61,6 +67,8 @@ const EventFunnel = ({ onNext, Funnel, Step, currentStep }: EventFunnelInterface
   };
 
   const handleHostCreation = () => {
+    if (isSubmittingHost) return;
+    setIsSubmittingHost(true);
     createHost(hostState, {
       onSuccess: () => {
         setHostState(initialHostState);
diff --git a/src/features/join/api/user.ts b/src/features/join/api/user.ts
index b4a589a4..a66ca26d 100644
--- a/src/features/join/api/user.ts
+++ b/src/features/join/api/user.ts
@@ -22,3 +22,13 @@ export const agreeTerms = async (data: TermsAgreementRequest) => {
   });
   return response.data;
 };
+
+//인증번호 발급
+export const sendCertificationCode = async (phoneNum: string): Promise<void> => {
+  await axiosClient.post('/sms/send', { phoneNum });
+};
+
+//인증번호 검증 
+export const verifyCertificationCode = async (phoneNum: string, certificationCode: string): Promise<void> => {
+  await axiosClient.post('/sms/verify', { phoneNum, certificationCode });
+};
\ No newline at end of file
diff --git a/src/features/join/hooks/useUserHook.ts b/src/features/join/hooks/useUserHook.ts
index 626b7114..f6780339 100644
--- a/src/features/join/hooks/useUserHook.ts
+++ b/src/features/join/hooks/useUserHook.ts
@@ -1,5 +1,5 @@
 import { useMutation, useQuery } from '@tanstack/react-query';
-import { agreeTerms, readUser, updateUser } from '../api/user';
+import { agreeTerms, readUser, sendCertificationCode, updateUser, verifyCertificationCode } from '../api/user';
 import { UserInfoRequest, UserInfoResponse } from '../model/userInformation';
 
 export const useUserInfo = (enabled: boolean = true) => {
@@ -26,4 +26,32 @@ export const useAgreeTerms = () => {
       alert('약관 동의 처리에 실패했습니다.');
     }
   });
-};
\ No newline at end of file
+};
+
+
+// 인증번호 발급
+export const useSendCertificationCode = () => {
+  return useMutation({
+    mutationFn: (phoneNum: string) => sendCertificationCode(phoneNum),
+    onSuccess: () => {
+      alert('인증번호를 발송했습니다.');
+    },
+    onError: () => {
+      alert('인증번호 전송에 실패했습니다.');
+    },
+  });
+};
+
+// 인증번호 확인 
+export const useVerifyCertificationCode = () => {
+  return useMutation({
+    mutationFn: (params: { phoneNum: string; certificationCode: string }) =>
+      verifyCertificationCode(params.phoneNum, params.certificationCode),
+    onSuccess: () => {
+      alert('인증에 성공했습니다.');
+    },
+    onError: () => {
+      alert('인증번호가 일치하지 않습니다.');
+    },
+  });
+}
\ No newline at end of file
diff --git a/src/pages/dashboard/ui/ParticipantsMangementPage.tsx b/src/pages/dashboard/ui/ParticipantsMangementPage.tsx
index 139a0fc6..c87ae3c7 100644
--- a/src/pages/dashboard/ui/ParticipantsMangementPage.tsx
+++ b/src/pages/dashboard/ui/ParticipantsMangementPage.tsx
@@ -7,6 +7,9 @@ import ParticipantsFilterBar from '../../../widgets/dashboard/ui/ParticipantsFil
 import EmailModal from '../../../widgets/dashboard/ui/email/EmailModal';
 import SelectTicketModal from '../../../widgets/dashboard/ui/email/SelectTicketModal';
 import { useParticipants } from '../../../features/dashboard/hook/useParticipants';
+import SecondaryButton from '../../../../design-system/ui/buttons/SecondaryButton';
+import { useParams } from 'react-router-dom';
+import { downloadExcel } from '../../../features/dashboard/api/participants';
 
 const ParticipantsManagementPage = () => {
   const [filterModalOpen, setfilterModalOpen] = useState(false);
@@ -15,6 +18,8 @@ const ParticipantsManagementPage = () => {
   const [listType, setListType] = useState<'all' | 'approved' | 'pending'>('all');
   const [filter, setFilter] = useState<string[]>([]);
   const [searchTerm, setSearchTerm] = useState('');
+  const { id } = useParams(); 
+  const eventId = Number(id);
 
   const { participants } = useParticipants();
   const checkedInCount = participants.filter((p: { checkedIn: boolean; }) => p.checkedIn).length;
@@ -29,18 +34,32 @@ const ParticipantsManagementPage = () => {
       String(p.ticketId).includes(lowerSearch)
     );
   });
+  const exportToExcel = () => {
+    try {
+    downloadExcel(eventId);
+  } catch (error) {
+    alert('엑셀 다운로드에 실패했습니다.');
+    console.error(error);
+  }
+  }
 
   return (
     <DashboardLayout centerContent="DASHBOARD" pinkBg={true}>
       <div className="flex flex-col px-2 md:px-4">
         <h1 className="text-center font-bold text-xl py-4 md:py-6">구매/참가자 관리</h1>
-        <div className="flex justify-end gap-2 md:gap-3 px-4">
-          <h3 className="text-placeholderText text-sm md:text-base">체크인</h3>
-          <span className="text-sm md:text-base">{checkedInCount}/{participants.length}</span>
-          <span className="text-sm md:text-base">|</span>
-          <h3 className="text-placeholderText text-sm md:text-base">미승인</h3>
-          <span className="text-sm md:text-base">{unapprovedCount}</span>
+
+        <div className="flex justify-between items-center px-2">
+          {<SecondaryButton label="Excel" color="pink" size="small" onClick={exportToExcel} />}
+
+          <div className="flex items-center gap-2 md:gap-3">
+            <h3 className="text-placeholderText text-sm md:text-base">체크인</h3>
+            <span className="text-sm md:text-base">{checkedInCount}/{participants.length}</span>
+            <span className="text-sm md:text-base">|</span>
+            <h3 className="text-placeholderText text-sm md:text-base">미승인</h3>
+            <span className="text-sm md:text-base">{unapprovedCount}</span>
+          </div>
         </div>
+
         <SearchBar
           placeholder="이름, 이메일, 전화번호, 티켓ID로 검색"
           className="py-5"
diff --git a/src/pages/dashboard/ui/ticket/TicketCreatePage.tsx b/src/pages/dashboard/ui/ticket/TicketCreatePage.tsx
index 429818c6..52134c88 100644
--- a/src/pages/dashboard/ui/ticket/TicketCreatePage.tsx
+++ b/src/pages/dashboard/ui/ticket/TicketCreatePage.tsx
@@ -14,6 +14,7 @@ const TicketCreatePage = () => {
   const { mutate: createTicket } = useCreateTicket();
   const { id } = useParams();
   const eventId = Number(id);
+  const [isSubmitting, setIsSubmitting] = useState(false); // 중복 클릭 방지
   const [ticketData, setTicketData] = useState<CreateTicketRequest>({
     eventId: eventId,
     ticketType: 'FIRST_COME',
@@ -63,6 +64,7 @@ const TicketCreatePage = () => {
 
   // API 호출
   const handleSaveClick = async () => {
+    if (isSubmitting) return;
     if (
       !ticketData.ticketName ||
       !ticketData.ticketDescription ||
@@ -72,8 +74,19 @@ const TicketCreatePage = () => {
       alert('모든 필수 입력 항목을 작성해주세요.');
       return;
     }
-    createTicket(ticketData);
-    navigate(`/dashboard/${id}/ticket`);
+    try {
+      setIsSubmitting(true);
+      createTicket(ticketData, {
+        onSuccess: () => {
+          navigate(`/dashboard/${id}/ticket`);
+        },
+        onSettled: () => {
+          setIsSubmitting(false);
+        }
+      });
+    } catch (e) {
+      setIsSubmitting(false);
+    }
   };
 
   return (
diff --git a/src/pages/join/AuthCallback.tsx b/src/pages/join/AuthCallback.tsx
index 1ed6d451..2f86046e 100644
--- a/src/pages/join/AuthCallback.tsx
+++ b/src/pages/join/AuthCallback.tsx
@@ -1,33 +1,40 @@
 import { useNavigate, useSearchParams } from 'react-router-dom';
 import useAuthStore from '../../app/provider/authStore';
-import { useEffect } from 'react';
+import { useEffect, useRef } from 'react';
 import { useUserInfo } from '../../features/join/hooks/useUserHook';
 
 const AuthCallback = () => {
   const navigate = useNavigate();
   const [searchParams] = useSearchParams();
-  const status = searchParams.get('status'); // 'new' or 'existing'
+  const status = searchParams.get('status'); // 'new', 'existing', 'duplicatedEmail'
   const { login, setName, closeModal } = useAuthStore();
   const { data } = useUserInfo();
+  const alreadyHandled = useRef(false);
 
   useEffect(() => {
-    const handleAuth = async () => {
-      if (!data) return;
-      try {
-        closeModal();
-        if (status === 'new') {
-          navigate('/join/agreement');
-        } else {
-          login();
-          setName(data?.name || '사용자');
-          navigate('/');
-        }
-      } catch {
-        navigate('/');
-      }
-    };
-    handleAuth();
-  }, [data, navigate, login, status, setName, closeModal]);
+    if (alreadyHandled.current || !status) return;
+
+    if (status === 'duplicatedEmail') {
+      alreadyHandled.current = true;
+      alert('이미 가입된 이메일입니다. 다른 이메일을 사용해주세요.');
+      navigate('/');
+      return;
+    }
+    if (status === 'new') {
+      alreadyHandled.current = true;
+      closeModal();
+      navigate('/join/agreement');
+      return;
+    }
+    if (status === 'existing' && data) {
+      alreadyHandled.current = true;
+      closeModal();
+      login();
+      setName(data.name || '사용자');
+      navigate('/');
+      return;
+    }
+  }, [status, data, closeModal, login, setName, navigate]);
 
   return <div className="text-center mt-32 text-lg font-bold">로그인 중입니다...</div>;
 };
diff --git a/src/pages/join/InfoInputPage.tsx b/src/pages/join/InfoInputPage.tsx
index 6ac65513..2e85f2a9 100644
--- a/src/pages/join/InfoInputPage.tsx
+++ b/src/pages/join/InfoInputPage.tsx
@@ -1,4 +1,4 @@
-import { useEffect } from 'react';
+import { useEffect} from 'react';
 import { useNavigate } from 'react-router-dom';
 import { useForm, SubmitHandler } from 'react-hook-form';
 import Header from '../../../design-system/ui/Header';
@@ -14,6 +14,7 @@ const InfoInputPage = () => {
   const { data, isLoading } = useUserInfo();
   const { login, setName } = useAuthStore();
   const { mutate: updateUser } = useUserUpdate();
+
   const {
     register,
     handleSubmit,
@@ -40,7 +41,6 @@ const InfoInputPage = () => {
     const formatted = formatPhoneNumber(e.target.value);
     setValue('phone', formatted, { shouldValidate: true });
   };
-
   const onSubmit: SubmitHandler<FormData> = formData => {
     const agreementStates = getAgreementStates();
     const updatedData = {
@@ -104,16 +104,19 @@ const InfoInputPage = () => {
         />
 
         {/* 연락처 필드 */}
-        <UnderlineTextField
-          label="연락처"
-          placeholder={'연락처'}
-          type="tel"
-          errorMessage={errors.phone?.message}
-          className="text-xl"
-          value={phoneValue}
-          onChange={handlePhoneChange}
-        />
-
+        <div className="flex items-end gap-3 pb-8">
+          <div className="flex-1">
+            <UnderlineTextField
+              label="연락처"
+              placeholder="연락처"
+              type="tel"
+              errorMessage={errors.phone?.message}
+              className="text-xl"
+              value={phoneValue}
+              onChange={handlePhoneChange}
+            />
+          </div>
+        </div>
         {/* 이메일 필드 */}
         <UnderlineTextField
           label="이메일"
diff --git a/src/shared/lib/formValidation.ts b/src/shared/lib/formValidation.ts
index 869d1df6..ffcc8dd4 100644
--- a/src/shared/lib/formValidation.ts
+++ b/src/shared/lib/formValidation.ts
@@ -9,7 +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 휴대전화 번호 형식(예: 010-1234-5678)이어야 합니다.'),
+    .regex(/^[0-9]{3}-[0-9]{3,4}-[0-9]{4}$/, '000-0000-0000 형식으로 입력해주세요.'),
 });
 export const organizerFormSchema = formSchema.pick({ email: true, phone: true });
 export const eventTitleSchema = z.object({
diff --git a/src/widgets/event/ui/TicketInfo.tsx b/src/widgets/event/ui/TicketInfo.tsx
index 51db01fe..66145fc1 100644
--- a/src/widgets/event/ui/TicketInfo.tsx
+++ b/src/widgets/event/ui/TicketInfo.tsx
@@ -63,6 +63,25 @@ const TicketInfo = ({ eventId }: { eventId: number }) => {
       alert('로그인이 필요한 서비스입니다.');
       return;
     }
+    const ticket = data?.result.find(t => t.ticketId === ticketId);
+    const now = new Date();
+
+    if (!ticket) {
+      alert('티켓 정보를 찾을 수 없습니다.');
+      return;
+    }
+
+    const start = new Date(ticket.startDate);
+    const end = new Date(ticket.endDate);
+    if (now < start || now > end) {
+      alert('이 티켓은 현재 구매할 수 없습니다. 판매 기간을 확인해주세요.');
+      return;
+    }
+
+    if (ticket.availableQuantity < ticketCnt) {
+      alert(`남은 티켓이 부족합니다. (남은 수량: ${ticket.availableQuantity}장)`);
+      return;
+    }
 
     try {
       const res = await readTicketOptions(ticketId);