diff --git a/mhd_oms/src/main/java/com/mhd/oms/domain/reservationMaterialInventory/repository/po/ReservationMaterialInventoryPO.java b/mhd_oms/src/main/java/com/mhd/oms/domain/reservationMaterialInventory/repository/po/ReservationMaterialInventoryPO.java
index 364e0bb55..175f9f3dc 100644
--- a/mhd_oms/src/main/java/com/mhd/oms/domain/reservationMaterialInventory/repository/po/ReservationMaterialInventoryPO.java
+++ b/mhd_oms/src/main/java/com/mhd/oms/domain/reservationMaterialInventory/repository/po/ReservationMaterialInventoryPO.java
@@ -232,4 +232,19 @@ public class ReservationMaterialInventoryPO extends MaterialBasePO {
     @ApiModelProperty("LOT编号")
     @Excel(name = "LOT编号")
     private String lotNumber;
+
+    // 入库时间(createTime)/更新时间(updateTime)继承自 BaseVOEntity，默认带时分秒；
+    // 库存查询导出复用 /list 接口，前端取 JSON 值直接进 Excel，这里覆盖 getter 只保留年月日。
+    // 不改 BaseVOEntity（全系统基类，其他模块时间列仍需时分秒），仅收窄本 PO 的序列化格式（与 WMS 库存查询一致）
+    @Override
+    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
+    public Date getCreateTime() {
+        return super.getCreateTime();
+    }
+
+    @Override
+    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
+    public Date getUpdateTime() {
+        return super.getUpdateTime();
+    }
 }
\ No newline at end of file
diff --git a/mhd_wms/src/main/java/com/mhd/wms/domain/materialInventory/repository/po/MaterialInventoryPO.java b/mhd_wms/src/main/java/com/mhd/wms/domain/materialInventory/repository/po/MaterialInventoryPO.java
index f785b7190..6a1bc7539 100644
--- a/mhd_wms/src/main/java/com/mhd/wms/domain/materialInventory/repository/po/MaterialInventoryPO.java
+++ b/mhd_wms/src/main/java/com/mhd/wms/domain/materialInventory/repository/po/MaterialInventoryPO.java
@@ -240,4 +240,19 @@ public class MaterialInventoryPO extends MaterialBasePO {
     @ApiModelProperty("规格型号")
     @Excel(name = "规格型号")
     private String specificationModel;
+
+    // 入库时间(createTime)/更新时间(updateTime)继承自 BaseVOEntity，默认带时分秒；
+    // 库存查询导出复用 /list 接口，前端取 JSON 值直接进 Excel，这里覆盖 getter 只保留年月日。
+    // 不改 BaseVOEntity（全系统基类，其他模块时间列仍需时分秒），仅收窄本 PO 的序列化格式（与 OMS 库存查询一致）
+    @Override
+    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
+    public Date getCreateTime() {
+        return super.getCreateTime();
+    }
+
+    @Override
+    @JsonFormat(pattern = "yyyy-MM-dd", timezone = "GMT+8")
+    public Date getUpdateTime() {
+        return super.getUpdateTime();
+    }
 }
\ No newline at end of file