diff --git a/src/app/social/detail/[storyId]/hooks/useSocialActions.test.ts b/src/app/social/detail/[storyId]/hooks/useSocialActions.test.ts
new file mode 100644
index 00000000..b9d3b200
--- /dev/null
+++ b/src/app/social/detail/[storyId]/hooks/useSocialActions.test.ts
@@ -0,0 +1,160 @@
+import { act, renderHook } from '@testing-library/react';
+import { useRouter } from 'next/navigation';
+import useSocialActions from '@/app/social/detail/[storyId]/hooks/useSocialActions';
+import { APP_ROUTES } from '@/constants/appRoutes';
+import { TEAM_USER_ROLE } from '@/types/teamUserRole';
+
+const TEST_STORY_ID = '188040fc-2631-40d9-bcef-b0476f9bfb14';
+const TEST_USER_ID = 2222;
+const TEST_USER_NAME = 'Admin';
+
+const insertNewCollaborator = jest.fn();
+const deleteSocialData = jest.fn();
+
+jest.mock('next/navigation', () => ({
+  useRouter: jest.fn(),
+}));
+
+jest.mock(
+  '@/hooks/api/supabase/story-collaborators/useParticipateCollaborator',
+  () => ({
+    __esModule: true,
+    default: () => ({
+      mutate: insertNewCollaborator,
+    }),
+  })
+);
+
+jest.mock('@/hooks/api/supabase/useDeleteSocialByDb', () => ({
+  __esModule: true,
+  default: () => ({
+    mutate: deleteSocialData,
+  }),
+}));
+
+global.alert = jest.fn();
+global.confirm = jest.fn();
+
+describe('useSocialActions 훅의 조건 분기 테스트', () => {
+  const routerPush = jest.fn();
+
+  beforeEach(() => {
+    jest.clearAllMocks();
+    (useRouter as jest.Mock).mockReturnValue({ push: routerPush });
+  });
+
+  const defaultParams = {
+    storyId: TEST_STORY_ID,
+    userId: TEST_USER_ID,
+    userName: TEST_USER_NAME,
+  };
+
+  it('로그인하지 않은 사용자는 alert와 함께 로그인 페이지로 라우트 전환됨', () => {
+    const { result } = renderHook(() =>
+      useSocialActions({
+        storyId: TEST_STORY_ID,
+        userId: undefined,
+        userName: undefined,
+      })
+    );
+
+    act(() => {
+      result.current.navigateStoryOrJoinSocial('GUEST');
+    });
+
+    expect(global.alert).toHaveBeenCalledWith('로그인이 필요한 서비스입니다.');
+    expect(routerPush).toHaveBeenCalledWith(`${APP_ROUTES.signin}`);
+  });
+
+  it('로그인된 GUEST가 모임 참여 confirm에 확인을 할 경우 insertNewCollaborator 호출됨', () => {
+    (global.confirm as jest.Mock).mockReturnValue(true);
+
+    const { result } = renderHook(() => useSocialActions(defaultParams));
+
+    act(() => {
+      result.current.navigateStoryOrJoinSocial('GUEST');
+    });
+
+    expect(insertNewCollaborator).toHaveBeenCalledWith({
+      data: {
+        story_id: TEST_STORY_ID,
+        user_id: TEST_USER_ID!,
+        user_name: TEST_USER_NAME!,
+        joined_at: expect.any(String),
+      },
+      role: TEAM_USER_ROLE.MEMBER,
+    });
+  });
+
+  it('로그인된 GUEST가 모임 참여 confirm을 취소할 경우 insertNewCollaborator는 호출되지 않음', () => {
+    (global.confirm as jest.Mock).mockReturnValue(false);
+
+    const { result } = renderHook(() => useSocialActions(defaultParams));
+
+    act(() => {
+      result.current.navigateStoryOrJoinSocial('GUEST');
+    });
+
+    expect(insertNewCollaborator).not.toHaveBeenCalled();
+  });
+
+  it('MEMBER는 스토리 상세 페이지로 라우트 전환됨', () => {
+    const { result } = renderHook(() => useSocialActions(defaultParams));
+
+    act(() => {
+      result.current.navigateStoryOrJoinSocial('MEMBER');
+    });
+
+    expect(routerPush).toHaveBeenCalledWith(
+      `${APP_ROUTES.libraryDetail}/${TEST_STORY_ID}/?page=0`
+    );
+  });
+
+  it('LEADER가 모임 삭제 confirm에 확인할 경우 deleteSocialData가 호출되고, 홈 페이지로 라우트 전환됨', () => {
+    (global.confirm as jest.Mock).mockReturnValue(true);
+
+    const { result } = renderHook(() => useSocialActions(defaultParams));
+
+    act(() => {
+      result.current.deleteSocial('LEADER');
+    });
+
+    expect(deleteSocialData).toHaveBeenCalled();
+    expect(routerPush).toHaveBeenCalledWith(`${APP_ROUTES.home}`);
+  });
+
+  it('LEADER가 모임 삭제 confirm을 취소할 경우 아무것도 실행되지 않음', () => {
+    (global.confirm as jest.Mock).mockReturnValue(false);
+
+    const { result } = renderHook(() => useSocialActions(defaultParams));
+
+    act(() => {
+      result.current.deleteSocial('LEADER');
+    });
+
+    expect(deleteSocialData).not.toHaveBeenCalled();
+    expect(routerPush).not.toHaveBeenCalledWith(`${APP_ROUTES.home}`);
+  });
+
+  it('GUEST가 deleteSocial을 호출하면 아무것도 실행되지 않음', () => {
+    const { result } = renderHook(() => useSocialActions(defaultParams));
+
+    act(() => {
+      result.current.deleteSocial('GUEST');
+    });
+
+    expect(deleteSocialData).not.toHaveBeenCalled();
+    expect(routerPush).not.toHaveBeenCalled();
+  });
+
+  it('MEMBER가 deleteSocial을 호출하면 아무것도 실행되지 않음', () => {
+    const { result } = renderHook(() => useSocialActions(defaultParams));
+
+    act(() => {
+      result.current.deleteSocial('MEMBER');
+    });
+
+    expect(deleteSocialData).not.toHaveBeenCalled();
+    expect(routerPush).not.toHaveBeenCalled();
+  });
+});