diff --git a/src/main/java/clap/server/adapter/inbound/web/dto/task/UpdateTaskStateRequest.java b/src/main/java/clap/server/adapter/inbound/web/dto/task/UpdateTaskStateRequest.java
new file mode 100644
index 00000000..ae65bb0c
--- /dev/null
+++ b/src/main/java/clap/server/adapter/inbound/web/dto/task/UpdateTaskStateRequest.java
@@ -0,0 +1,14 @@
+package clap.server.adapter.inbound.web.dto.task;
+
+import clap.server.adapter.outbound.persistense.entity.task.constant.TaskStatus;
+import io.swagger.v3.oas.annotations.media.Schema;
+import jakarta.validation.constraints.NotNull;
+
+@Schema(description = "작업 상태 변경 요청")
+public record UpdateTaskStateRequest(
+
+        @Schema(description = "변경하고 싶은 작업 상태", example = "완료")
+        @NotNull
+        TaskStatus taskStatus
+) {
+}
diff --git a/src/main/java/clap/server/adapter/inbound/web/task/ManagementTaskController.java b/src/main/java/clap/server/adapter/inbound/web/task/ManagementTaskController.java
index 7a4c0f19..2bf0e75b 100644
--- a/src/main/java/clap/server/adapter/inbound/web/task/ManagementTaskController.java
+++ b/src/main/java/clap/server/adapter/inbound/web/task/ManagementTaskController.java
@@ -4,6 +4,7 @@
 import clap.server.adapter.inbound.web.dto.task.*;
 import clap.server.application.port.inbound.task.ApprovalTaskUsecase;
 import clap.server.application.port.inbound.task.CreateTaskUsecase;
+import clap.server.application.port.inbound.task.UpdateTaskStatusUsecase;
 import clap.server.application.port.inbound.task.UpdateTaskUsecase;
 import clap.server.common.annotation.architecture.WebAdapter;
 import io.swagger.v3.oas.annotations.Operation;
@@ -30,6 +31,7 @@ public class ManagementTaskController {
 
     private final CreateTaskUsecase createTaskUsecase;
     private final UpdateTaskUsecase updateTaskUsecase;
+    private final UpdateTaskStatusUsecase updateTaskStatusUsecase;
     private final ApprovalTaskUsecase approvalTaskUsecase;
 
     @Operation(summary = "작업 요청 생성")
@@ -54,6 +56,17 @@ public ResponseEntity<UpdateTaskResponse> updateTask(
         return ResponseEntity.ok(updateTaskUsecase.updateTask(userInfo.getUserId(), taskId, updateTaskRequest, attachments));
     }
 
+    @Operation(summary = "작업 상태 변경")
+    @Secured({"ROLE_MANGER"})
+    @PatchMapping("/state/{taskId}")
+    public ResponseEntity<UpdateTaskResponse> updateTaskState(
+            @PathVariable @NotNull Long taskId,
+            @AuthenticationPrincipal SecurityUserDetails userInfo,
+            @RequestBody UpdateTaskStateRequest updateTaskStateRequest) {
+
+        return ResponseEntity.ok(updateTaskStatusUsecase.updateTaskState(userInfo.getUserId(), taskId, updateTaskStateRequest));
+    }
+
     @Operation(summary = "작업 승인")
     @Secured({"ROLE_MANAGER"})
     @PostMapping("/approval/{taskId}")
diff --git a/src/main/java/clap/server/application/Task/UpdateTaskService.java b/src/main/java/clap/server/application/Task/UpdateTaskService.java
index e25938ac..d77a8eac 100644
--- a/src/main/java/clap/server/application/Task/UpdateTaskService.java
+++ b/src/main/java/clap/server/application/Task/UpdateTaskService.java
@@ -2,6 +2,7 @@
 
 import clap.server.adapter.inbound.web.dto.task.UpdateTaskRequest;
 import clap.server.adapter.inbound.web.dto.task.UpdateTaskResponse;
+import clap.server.adapter.inbound.web.dto.task.UpdateTaskStateRequest;
 import clap.server.adapter.outbound.infrastructure.s3.S3UploadAdapter;
 import clap.server.adapter.outbound.persistense.entity.task.constant.TaskStatus;
 import clap.server.application.mapper.AttachmentMapper;
@@ -9,6 +10,7 @@
 import clap.server.application.port.inbound.domain.CategoryService;
 import clap.server.application.port.inbound.domain.MemberService;
 import clap.server.application.port.inbound.domain.TaskService;
+import clap.server.application.port.inbound.task.UpdateTaskStatusUsecase;
 import clap.server.application.port.inbound.task.UpdateTaskUsecase;
 import clap.server.application.port.outbound.task.CommandAttachmentPort;
 import clap.server.application.port.outbound.task.CommandTaskPort;
@@ -34,7 +36,7 @@
 @ApplicationService
 @RequiredArgsConstructor
 @Slf4j
-public class UpdateTaskService implements UpdateTaskUsecase {
+public class UpdateTaskService implements UpdateTaskUsecase, UpdateTaskStatusUsecase {
 
     private final MemberService memberService;
     private final CategoryService categoryService;
@@ -62,6 +64,18 @@ public UpdateTaskResponse updateTask(Long requesterId, Long taskId, UpdateTaskRe
         return TaskMapper.toUpdateTaskResponse(updatedTask);
     }
 
+    @Override
+    @Transactional
+    public UpdateTaskResponse updateTaskState(Long memberId, Long taskId, UpdateTaskStateRequest updateTaskStateRequest) {
+        memberService.findActiveMember(memberId);
+        Task task = taskService.findById(taskId);
+        task.updateTaskStatus(updateTaskStateRequest.taskStatus());
+        Task updateTask = commandTaskPort.save(task);
+        return TaskMapper.toUpdateTaskResponse(updateTask);
+
+        // TODO : 알림 생성 로직 및 푸시 알림 로직 추가
+    }
+
     private void updateAttachments(List<Long> attachmentIdsToDelete, List<MultipartFile> files, Task task) {
         validateAttachments(attachmentIdsToDelete, task);
         commandAttachmentPort.deleteByIds(attachmentIdsToDelete);
diff --git a/src/main/java/clap/server/application/port/inbound/task/UpdateTaskStatusUsecase.java b/src/main/java/clap/server/application/port/inbound/task/UpdateTaskStatusUsecase.java
new file mode 100644
index 00000000..bdd6b416
--- /dev/null
+++ b/src/main/java/clap/server/application/port/inbound/task/UpdateTaskStatusUsecase.java
@@ -0,0 +1,8 @@
+package clap.server.application.port.inbound.task;
+
+import clap.server.adapter.inbound.web.dto.task.UpdateTaskResponse;
+import clap.server.adapter.inbound.web.dto.task.UpdateTaskStateRequest;
+
+public interface UpdateTaskStatusUsecase {
+    UpdateTaskResponse updateTaskState(Long memberId, Long taskId, UpdateTaskStateRequest updateTaskStateRequest);
+}
diff --git a/src/main/java/clap/server/application/port/inbound/task/UpdateTaskUsecase.java b/src/main/java/clap/server/application/port/inbound/task/UpdateTaskUsecase.java
index ee3f6f98..f1bbbe6a 100644
--- a/src/main/java/clap/server/application/port/inbound/task/UpdateTaskUsecase.java
+++ b/src/main/java/clap/server/application/port/inbound/task/UpdateTaskUsecase.java
@@ -3,6 +3,7 @@
 
 import clap.server.adapter.inbound.web.dto.task.UpdateTaskRequest;
 import clap.server.adapter.inbound.web.dto.task.UpdateTaskResponse;
+import clap.server.adapter.inbound.web.dto.task.UpdateTaskStateRequest;
 import org.springframework.web.multipart.MultipartFile;
 
 import java.util.List;
diff --git a/src/main/java/clap/server/domain/model/task/Task.java b/src/main/java/clap/server/domain/model/task/Task.java
index 1142fba0..401caa38 100644
--- a/src/main/java/clap/server/domain/model/task/Task.java
+++ b/src/main/java/clap/server/domain/model/task/Task.java
@@ -25,7 +25,7 @@ public class Task extends BaseTime {
     private Category category;
     private Member requester;
     private TaskStatus taskStatus;
-    private int processorOrder;
+    private long processorOrder;
     private Member processor;
     private Label label;
     private Member reviewer;
@@ -50,6 +50,16 @@ public void updateTask(Category category, String title, String description) {
         this.taskCode = toTaskCode(category);
     }
 
+    public void setInitialProcessorOrder() {
+        if(this.processor == null) {
+            this.processorOrder = this.taskId * 128L;
+        }
+    }
+
+    public void updateTaskStatus(TaskStatus status) {
+        this.taskStatus = status;
+    }
+
     public void approveTask(Member reviewer, Member processor, LocalDateTime dueDate, Category category, Label label) {
         this.reviewer = reviewer;
         this.processor = processor;