diff --git a/src/main/java/ceos/backend/domain/application/ApplicationController.java b/src/main/java/ceos/backend/domain/application/ApplicationController.java
index fa11c758..f7a0f9c6 100644
--- a/src/main/java/ceos/backend/domain/application/ApplicationController.java
+++ b/src/main/java/ceos/backend/domain/application/ApplicationController.java
@@ -17,6 +17,8 @@
 import ceos.backend.domain.application.service.ApplicationService;
 import ceos.backend.global.common.entity.Part;
 import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.Parameter;
+import io.swagger.v3.oas.annotations.media.Schema;
 import io.swagger.v3.oas.annotations.tags.Tag;
 import jakarta.validation.Valid;
 import java.nio.file.Path;
@@ -40,10 +42,13 @@ public class ApplicationController {
     @Operation(summary = "지원자 목록 보기")
     @GetMapping
     public GetApplications getApplications(
-            @RequestParam(value = "part", required = false) Part part,
-            @RequestParam(value = "docPass", required = false) Pass docPass,
-            @RequestParam(value = "finalPass", required = false) Pass finalPass,
-            @RequestParam(value = "applicantName", required = false) String applicantName,
+            @Parameter(schema = @Schema(allowableValues = {"PRODUCT", "DESIGN", "FRONTEND", "BACKEND"}))
+            @RequestParam(value = "part", required = false, defaultValue = "") Part part,
+            @Parameter(schema = @Schema(allowableValues = {"PASS", "FAIL"}))
+            @RequestParam(value = "docPass", required = false, defaultValue = "") Pass docPass,
+            @Parameter(schema = @Schema(allowableValues = {"PASS", "FAIL"}))
+            @RequestParam(value = "finalPass", required = false, defaultValue = "") Pass finalPass,
+            @RequestParam(value = "applicantName", required = false, defaultValue = "") String applicantName,
             @RequestParam("pageNum") int pageNum,
             @RequestParam("limit") int limit) {
         log.info("지원자 목록 보기");
diff --git a/src/test/java/ceos/backend/domain/application/ApplicationControllerTest.java b/src/test/java/ceos/backend/domain/application/ApplicationControllerTest.java
index 31ca80f7..e135090c 100644
--- a/src/test/java/ceos/backend/domain/application/ApplicationControllerTest.java
+++ b/src/test/java/ceos/backend/domain/application/ApplicationControllerTest.java
@@ -6,6 +6,9 @@
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.test.autoconfigure.web.servlet.AutoConfigureMockMvc;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.security.authentication.TestingAuthenticationToken;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.test.web.servlet.request.SecurityMockMvcRequestPostProcessors;
 import org.springframework.test.web.servlet.MockMvc;
 import org.springframework.test.web.servlet.request.MockMvcRequestBuilders;
 import org.springframework.test.web.servlet.result.MockMvcResultMatchers;
@@ -20,6 +23,50 @@ public class ApplicationControllerTest {
     @Test
     void getApplicationExcelCreationTime() throws Exception {
         mockMvc.perform(MockMvcRequestBuilders.get("/applications/file/creationtime"))
-                .andExpect(MockMvcResultMatchers.status().is(401));
+                .andExpect(MockMvcResultMatchers.status().is(403));
+    }
+
+    @DisplayName("지원서 목록 보기 API - 필수 아닌 파라미터들 길이 0인 문자열로 처리")
+    @Test
+    void getApplicationsWithZeroStrings() throws Exception {
+        Authentication authentication = new TestingAuthenticationToken(null, null, "ROLE_ADMIN");
+
+        mockMvc.perform(MockMvcRequestBuilders
+                        .get("/applications?part=&docPass=&finalPass=&applicantName=&pageNum=0&limit=7")
+                        .with(SecurityMockMvcRequestPostProcessors.authentication(authentication)))
+                .andExpect(MockMvcResultMatchers.status().isOk());
+    }
+
+    @DisplayName("지원서 목록 보기 API - 필수 아닌 파라미터들 제외")
+    @Test
+    void getApplicationsWithoutRequiredFalse() throws Exception {
+        Authentication authentication = new TestingAuthenticationToken(null, null, "ROLE_ADMIN");
+
+        mockMvc.perform(MockMvcRequestBuilders
+                        .get("/applications?pageNum=0&limit=7")
+                        .with(SecurityMockMvcRequestPostProcessors.authentication(authentication)))
+                .andExpect(MockMvcResultMatchers.status().isOk());
+    }
+
+    @DisplayName("지원서 목록 보기 API - enum 타입 영어로 처리")
+    @Test
+    void successGetApplications() throws Exception {
+        Authentication authentication = new TestingAuthenticationToken(null, null, "ROLE_ADMIN");
+
+        mockMvc.perform(MockMvcRequestBuilders
+                        .get("/applications?part=PRODUCT&docPass=PASS&finalPass=FAIL&applicantName=&pageNum=0&limit=7")
+                        .with(SecurityMockMvcRequestPostProcessors.authentication(authentication)))
+                .andExpect(MockMvcResultMatchers.status().isOk());
+    }
+
+    @DisplayName("지원서 목록 보기 API - enum 타입 한글로 처리 시 예외 발생")
+    @Test
+    void failGetApplications() throws Exception {
+        Authentication authentication = new TestingAuthenticationToken(null, null, "ROLE_ADMIN");
+
+        mockMvc.perform(MockMvcRequestBuilders
+                        .get("/applications?part=기획&docPass=합격&finalPass=불합격&applicantName=&pageNum=0&limit=7")
+                        .with(SecurityMockMvcRequestPostProcessors.authentication(authentication)))
+                .andExpect(MockMvcResultMatchers.status().is(400));
     }
 }