diff --git a/viewsh-module-ops/viewsh-module-ops-biz/src/main/java/com/viewsh/module/ops/service/trajectory/dto/TrajectoryTimelineReqDTO.java b/viewsh-module-ops/viewsh-module-ops-biz/src/main/java/com/viewsh/module/ops/service/trajectory/dto/TrajectoryTimelineReqDTO.java
index d76acad..d6b8094 100644
--- a/viewsh-module-ops/viewsh-module-ops-biz/src/main/java/com/viewsh/module/ops/service/trajectory/dto/TrajectoryTimelineReqDTO.java
+++ b/viewsh-module-ops/viewsh-module-ops-biz/src/main/java/com/viewsh/module/ops/service/trajectory/dto/TrajectoryTimelineReqDTO.java
@@ -16,8 +16,7 @@ import java.time.LocalDate;
 @Data
 public class TrajectoryTimelineReqDTO {
 
-    @Schema(description = "设备ID", requiredMode = Schema.RequiredMode.REQUIRED, example = "31")
-    @NotNull(message = "设备ID不能为空")
+    @Schema(description = "设备ID（不传=全部设备）", example = "31")
     private Long deviceId;
 
     @Schema(description = "查询日期", requiredMode = Schema.RequiredMode.REQUIRED, example = "2026-03-30")