diff --git a/src/main/java/com/example/codebase/domain/exhibition/dto/EventScheduleCreateDTO.java b/src/main/java/com/example/codebase/domain/exhibition/dto/EventScheduleCreateDTO.java
index 1ac2c131..ef6842cb 100644
--- a/src/main/java/com/example/codebase/domain/exhibition/dto/EventScheduleCreateDTO.java
+++ b/src/main/java/com/example/codebase/domain/exhibition/dto/EventScheduleCreateDTO.java
@@ -30,8 +30,14 @@ public class EventScheduleCreateDTO {
     private List<ParticipantInformationDTO> participants;
 
     public void checkTimeValidity() {
+        if (this.endDateTime == null) {
+            return;
+        }
         if (this.startDateTime.equals(this.endDateTime)) {
             throw new RuntimeException("시작시간과 종료시간이 같을 수 없습니다.");
         }
+        if (this.startDateTime.isAfter(this.endDateTime)) {
+            throw new RuntimeException("시작시간이 종료시간보다 늦을 수 없습니다.");
+        }
     }
 }
diff --git a/src/test/java/com/example/codebase/controller/ExhibitionControllerTest.java b/src/test/java/com/example/codebase/controller/ExhibitionControllerTest.java
index bda5daf0..fe3605c5 100644
--- a/src/test/java/com/example/codebase/controller/ExhibitionControllerTest.java
+++ b/src/test/java/com/example/codebase/controller/ExhibitionControllerTest.java
@@ -397,7 +397,7 @@ private byte[] createImageFile() throws IOException {
                                 .accept(MediaType.APPLICATION_JSON)
                                 .characterEncoding("UTF-8"))
                 .andDo(print())
-                .andExpect(status().isCreated());
+                .andExpect(status().isBadRequest());
     }
 
     @DisplayName("이벤트 전체 조회 - 성공")
@@ -703,4 +703,37 @@ private byte[] createImageFile() throws IOException {
                 .andExpect(status().isBadRequest());
     }
 
+    @WithMockCustomUser(username = "user", role = "CURATOR")
+    @DisplayName("스케줄 종료시간이 시작시간보다 빠를시")
+    @Test
+    public void 스케줄_생성시_종료시간이_시작시간보다_빠른경우() throws Exception {
+        createOrLoadMember("user", RoleStatus.CURATOR, "ROLE_CURATOR");
+
+        ExhbitionCreateDTO dto = mockCreateExhibitionDTO(1);
+        EventScheduleCreateDTO eventScheduleCreateDTO = dto.getSchedule().get(0);
+        eventScheduleCreateDTO.setEndDateTime(LocalDateTime.now().minusHours(1));
+        eventScheduleCreateDTO.setStartDateTime(LocalDateTime.now());
+
+        MockMultipartFile dtoFile =
+                new MockMultipartFile("dto", "", "application/json", objectMapper.writeValueAsBytes(dto));
+
+        MockMultipartFile mediaFile =
+                new MockMultipartFile("mediaFiles", "image.jpg", "image/jpg", createImageFile());
+
+        MockMultipartFile thumbnailFile =
+                new MockMultipartFile("thumbnailFile", "image.jpg", "image/jpg", createImageFile());
+
+        mockMvc
+                .perform(
+                        multipart("/api/exhibitions")
+                                .file(dtoFile)
+                                .file(mediaFile)
+                                .file(thumbnailFile)
+                                .contentType(MediaType.MULTIPART_FORM_DATA)
+                                .accept(MediaType.APPLICATION_JSON)
+                                .characterEncoding("UTF-8"))
+                .andDo(print())
+                .andExpect(status().isBadRequest());
+    }
+
 }