diff --git a/frontend/src/apis/application/createApplication.ts b/frontend/src/apis/application/createApplication.ts
new file mode 100644
index 000000000..a2ad1fadc
--- /dev/null
+++ b/frontend/src/apis/application/createApplication.ts
@@ -0,0 +1,33 @@
+import API_BASE_URL from '@/constants/api';
+import { secureFetch } from '@/apis/auth/secureFetch';
+import { ApplicationFormData } from '@/types/application';
+
+export const createApplication = async (
+  data: ApplicationFormData,
+  clubId: string,
+) => {
+  try {
+    const response = await secureFetch(
+      `${API_BASE_URL}/api/club/${clubId}/application`,
+      {
+        method: 'POST',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify(data),
+      },
+    );
+
+    if (!response.ok) {
+      throw new Error('지원서 제출에 실패했습니다.');
+    }
+
+    const result = await response.json();
+    return result.data;
+  } catch (error) {
+    console.error('지원서 제출 중 오류 발생:', error);
+    throw error;
+  }
+};
+
+export default createApplication;
diff --git a/frontend/src/apis/application/getApplication.ts b/frontend/src/apis/application/getApplication.ts
new file mode 100644
index 000000000..a9ec0e0bc
--- /dev/null
+++ b/frontend/src/apis/application/getApplication.ts
@@ -0,0 +1,20 @@
+import API_BASE_URL from '@/constants/api';
+
+const getApplication = async (clubId: string) => {
+  try {
+    const response = await fetch(`${API_BASE_URL}/api/club/${clubId}/apply`);
+    if (!response.ok) {
+      throw new Error(`Failed to fetch: ${response.statusText}`);
+    }
+
+    const result = await response.json();
+    return result.data;
+  } catch (error) {
+    // [x] FIXME:
+    // {"statuscode":"800-1","message":"지원서가 존재하지 않습니다.","data":null}
+    console.error('Error fetching club details', error);
+    throw error;
+  }
+};
+
+export default getApplication;
diff --git a/frontend/src/apis/application/updateApplication.ts b/frontend/src/apis/application/updateApplication.ts
new file mode 100644
index 000000000..6111af261
--- /dev/null
+++ b/frontend/src/apis/application/updateApplication.ts
@@ -0,0 +1,33 @@
+import API_BASE_URL from '@/constants/api';
+import { secureFetch } from '@/apis/auth/secureFetch';
+import { ApplicationFormData } from '@/types/application';
+
+export const updateApplication = async (
+  data: ApplicationFormData,
+  clubId: string,
+) => {
+  try {
+    const response = await secureFetch(
+      `${API_BASE_URL}/api/club/${clubId}/application`,
+      {
+        method: 'PUT',
+        headers: {
+          'Content-Type': 'application/json',
+        },
+        body: JSON.stringify(data),
+      },
+    );
+
+    if (!response.ok) {
+      throw new Error('지원서 수정에 실패했습니다.');
+    }
+
+    const result = await response.json();
+    return result.data;
+  } catch (error) {
+    console.error('지원서 수정 중 오류 발생:', error);
+    throw error;
+  }
+};
+
+export default updateApplication;
diff --git a/frontend/src/constants/INITIAL_FORM_DATA.ts b/frontend/src/constants/INITIAL_FORM_DATA.ts
index c19fedd56..e97cf76f1 100644
--- a/frontend/src/constants/INITIAL_FORM_DATA.ts
+++ b/frontend/src/constants/INITIAL_FORM_DATA.ts
@@ -1,7 +1,7 @@
 import { ApplicationFormData } from '@/types/application';
 
 const INITIAL_FORM_DATA: ApplicationFormData = {
-  form_title: '',
+  title: '',
   questions: [
     {
       id: 1,
@@ -9,6 +9,7 @@ const INITIAL_FORM_DATA: ApplicationFormData = {
       description: '',
       type: 'SHORT_TEXT',
       options: { required: true },
+      items: [],
     },
     {
       id: 2,
diff --git a/frontend/src/hooks/queries/application/useGetApplication.ts b/frontend/src/hooks/queries/application/useGetApplication.ts
new file mode 100644
index 000000000..28d8865c2
--- /dev/null
+++ b/frontend/src/hooks/queries/application/useGetApplication.ts
@@ -0,0 +1,10 @@
+import { useQuery } from '@tanstack/react-query';
+import getApplication from '@/apis/application/getApplication';
+
+export const useGetApplication = (clubId: string) => {
+  return useQuery({
+    queryKey: ['applicationForm', clubId],
+    queryFn: () => getApplication(clubId),
+    retry: false,
+  });
+};
diff --git a/frontend/src/mocks/api/apply.ts b/frontend/src/mocks/api/apply.ts
index 039920ad9..56f6a4eee 100644
--- a/frontend/src/mocks/api/apply.ts
+++ b/frontend/src/mocks/api/apply.ts
@@ -25,7 +25,7 @@ export const applyHandlers = [
     return HttpResponse.json(
       {
         clubId,
-        form_title: mockData.form_title,
+        form_title: mockData.title,
         questions: mockData.questions,
       },
       { status: 200 },
diff --git a/frontend/src/mocks/data/mockData.ts b/frontend/src/mocks/data/mockData.ts
index e81e8ea99..45c93df72 100644
--- a/frontend/src/mocks/data/mockData.ts
+++ b/frontend/src/mocks/data/mockData.ts
@@ -23,7 +23,7 @@ export interface Question {
 }
 
 export const mockData: ApplicationFormData = {
-  form_title: '2025_2_지원서',
+  title: '2025_2_지원서',
   questions: [
     {
       id: 1,
diff --git a/frontend/src/pages/AdminPage/application/CreateApplicationForm.tsx b/frontend/src/pages/AdminPage/application/CreateApplicationForm.tsx
index a37828f2d..bc3be5bcc 100644
--- a/frontend/src/pages/AdminPage/application/CreateApplicationForm.tsx
+++ b/frontend/src/pages/AdminPage/application/CreateApplicationForm.tsx
@@ -1,25 +1,36 @@
-// 지원서 제작하기 : 지원서 제작 컴포넌트
-// 지원서 수정과 제작을 맡을 컴포넌트
-// Todo: 질문 삭제 및 질문 추가 기능 구현
-import { useState } from 'react';
+import { useState, useEffect } from 'react';
 import QuestionBuilder from '@/pages/AdminPage/application/components/QuestionBuilder/QuestionBuilder';
 import { QuestionType } from '@/types/application';
 import { Question } from '@/types/application';
-import { mockData } from '@/mocks/data/mockData';
 import { ApplicationFormData } from '@/types/application';
 import { PageContainer } from '@/styles/PageContainer.styles';
 import * as Styled from './CreateApplicationForm.styles';
 import INITIAL_FORM_DATA from '@/constants/INITIAL_FORM_DATA';
 import { QuestionDivider } from './CreateApplicationForm.styles';
+import { useAdminClubContext } from '@/context/AdminClubContext';
+import { useGetApplication } from '@/hooks/queries/application/useGetApplication';
+import createApplication from '@/apis/application/createApplication';
+import updateApplication from '@/apis/application/updateApplication';
 
 const CreateApplicationForm = () => {
-  const [formData, setFormData] = useState<ApplicationFormData>(
-    mockData ?? INITIAL_FORM_DATA,
-  );
+  const { clubId } = useAdminClubContext();
+  if (!clubId) return null;
+
+  const { data, isLoading, isError } = useGetApplication(clubId);
+
+  const [formData, setFormData] =
+    useState<ApplicationFormData>(INITIAL_FORM_DATA);
+
+  useEffect(() => {
+    if (data) {
+      setFormData(data);
+    }
+  }, [data]);
+
   const [nextId, setNextId] = useState(() => {
-    const questions = mockData?.questions ?? INITIAL_FORM_DATA.questions;
+    const questions = data?.questions ?? INITIAL_FORM_DATA.questions;
     if (questions.length === 0) return 1;
-    const maxId = Math.max(...questions.map((q) => q.id));
+    const maxId = Math.max(...questions.map((q: Question) => q.id));
     return maxId + 1;
   });
 
@@ -29,6 +40,7 @@ const CreateApplicationForm = () => {
       title: '',
       description: '',
       type: 'SHORT_TEXT',
+      items: [],
       options: { required: false },
     };
     setFormData((prev) => ({
@@ -61,7 +73,7 @@ const CreateApplicationForm = () => {
   const handleFormTitleChange = (value: string) => {
     setFormData((prev) => ({
       ...prev,
-      form_title: value,
+      title: value,
     }));
   };
 
@@ -87,7 +99,7 @@ const CreateApplicationForm = () => {
             ? q.items && q.items.length >= 2
               ? q.items
               : [{ value: '' }, { value: '' }]
-            : undefined,
+            : [],
         };
       }),
     }));
@@ -102,12 +114,37 @@ const CreateApplicationForm = () => {
     }));
   };
 
+  const handleSubmit = async () => {
+    if (!clubId) return;
+    const reorderedQuestions = formData.questions.map((q, idx) => ({
+      ...q,
+      id: idx + 1,
+    }));
+
+    const payload: ApplicationFormData = {
+      ...formData,
+      questions: reorderedQuestions,
+    };
+    try {
+      if (data) {
+        await updateApplication(payload, clubId);
+        alert('지원서가 성공적으로 수정되었습니다.');
+      } else {
+        await createApplication(payload, clubId);
+        alert('지원서가 성공적으로 생성되었습니다.');
+      }
+    } catch (error) {
+      alert('지원서 저장에 실패했습니다.');
+      console.error(error);
+    }
+  };
+
   return (
     <>
       <PageContainer>
         <Styled.FormTitle
           type='text'
-          value={formData.form_title}
+          value={formData.title}
           onChange={(e) => handleFormTitleChange(e.target.value)}
           placeholder='지원서 제목을 입력하세요'
         ></Styled.FormTitle>
@@ -135,7 +172,9 @@ const CreateApplicationForm = () => {
           질문 추가 +
         </Styled.AddQuestionButton>
         <Styled.ButtonWrapper>
-          <Styled.submitButton>제출하기</Styled.submitButton>
+          <Styled.submitButton onClick={handleSubmit}>
+            저장하기
+          </Styled.submitButton>
         </Styled.ButtonWrapper>
       </PageContainer>
     </>
diff --git a/frontend/src/pages/AdminPage/application/answer/AnswerApplicationForm.tsx b/frontend/src/pages/AdminPage/application/answer/AnswerApplicationForm.tsx
index b728f844a..4b0b3cf51 100644
--- a/frontend/src/pages/AdminPage/application/answer/AnswerApplicationForm.tsx
+++ b/frontend/src/pages/AdminPage/application/answer/AnswerApplicationForm.tsx
@@ -1,4 +1,3 @@
-import { mockData } from '@/mocks/data/mockData';
 import { PageContainer } from '@/styles/PageContainer.styles';
 import * as Styled from './AnswerApplicationForm.styles';
 import Header from '@/components/common/Header/Header';
@@ -7,13 +6,23 @@ import { useGetClubDetail } from '@/hooks/queries/club/useGetClubDetail';
 import ClubProfile from '@/pages/ClubDetailPage/components/ClubProfile/ClubProfile';
 import { useAnswers } from '@/hooks/useAnswers';
 import QuestionAnswerer from '@/pages/AdminPage/application/components/QuestionAnswerer/QuestionAnswerer';
+import { useGetApplication } from '@/hooks/queries/application/useGetApplication';
+import { Question } from '@/types/application';
 
 const AnswerApplicationForm = () => {
   const { clubId } = useParams<{ clubId: string }>();
   const { data: clubDetail, error } = useGetClubDetail(clubId || '');
+  const {
+    data: formData,
+    isLoading,
+    isError,
+  } = useGetApplication(clubId || '');
+  if (!clubId) return null;
+  if (!clubDetail) return null;
   const { onAnswerChange, getAnswersById } = useAnswers();
-  if (!clubDetail) {
-    return null;
+
+  if (!clubId || isLoading || !formData || !clubDetail) {
+    return <div>로딩 중...</div>;
   }
 
   if (error) {
@@ -31,9 +40,9 @@ const AnswerApplicationForm = () => {
           category={clubDetail.category}
           tags={clubDetail.tags}
         />
-        <Styled.FormTitle>{mockData.form_title}</Styled.FormTitle>
+        <Styled.FormTitle>{formData.title}</Styled.FormTitle>
         <Styled.QuestionsWrapper>
-          {mockData.questions.map((q) => (
+          {formData.questions.map((q: Question) => (
             <QuestionAnswerer
               key={q.id}
               question={q}
diff --git a/frontend/src/types/application.ts b/frontend/src/types/application.ts
index 2296ccc02..7a8375e19 100644
--- a/frontend/src/types/application.ts
+++ b/frontend/src/types/application.ts
@@ -10,7 +10,7 @@ export interface Question {
   options: {
     required: boolean;
   };
-  items?: { value: string }[];
+  items: { value: string }[];
 }
 
 export interface QuestionBuilderProps extends Question {
@@ -46,7 +46,7 @@ export interface ChoiceProps extends QuestionComponentProps {
 }
 
 export interface ApplicationFormData {
-  form_title: string;
+  title: string;
   questions: Question[];
 }