diff --git a/internal/app/dto/monitor_dto.go b/internal/app/dto/monitor_dto.go
index c8ac4e9..2789522 100644
--- a/internal/app/dto/monitor_dto.go
+++ b/internal/app/dto/monitor_dto.go
@@ -24,8 +24,8 @@ type ListSensorDataRequest struct {
 	PageSize   int        `form:"pageSize,default=10"`
 	DeviceID   *uint      `form:"device_id"`
 	SensorType *string    `form:"sensor_type"`
-	StartTime  *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime    *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime  *time.Time `form:"start_time"`
+	EndTime    *time.Time `form:"end_time"`
 	OrderBy    string     `form:"order_by"`
 }
 
@@ -52,8 +52,8 @@ type ListDeviceCommandLogRequest struct {
 	PageSize        int        `form:"pageSize,default=10"`
 	DeviceID        *uint      `form:"device_id"`
 	ReceivedSuccess *bool      `form:"received_success"`
-	StartTime       *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime         *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime       *time.Time `form:"start_time"`
+	EndTime         *time.Time `form:"end_time"`
 	OrderBy         string     `form:"order_by"`
 }
 
@@ -80,8 +80,8 @@ type ListPlanExecutionLogRequest struct {
 	PageSize  int        `form:"pageSize,default=10"`
 	PlanID    *uint      `form:"plan_id"`
 	Status    *string    `form:"status"`
-	StartTime *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime   *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime *time.Time `form:"start_time"`
+	EndTime   *time.Time `form:"end_time"`
 	OrderBy   string     `form:"order_by"`
 }
 
@@ -112,8 +112,8 @@ type ListTaskExecutionLogRequest struct {
 	PlanExecutionLogID *uint      `form:"plan_execution_log_id"`
 	TaskID             *int       `form:"task_id"`
 	Status             *string    `form:"status"`
-	StartTime          *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime            *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime          *time.Time `form:"start_time"`
+	EndTime            *time.Time `form:"end_time"`
 	OrderBy            string     `form:"order_by"`
 }
 
@@ -152,8 +152,8 @@ type ListPendingCollectionRequest struct {
 	PageSize  int        `form:"pageSize,default=10"`
 	DeviceID  *uint      `form:"device_id"`
 	Status    *string    `form:"status"`
-	StartTime *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime   *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime *time.Time `form:"start_time"`
+	EndTime   *time.Time `form:"end_time"`
 	OrderBy   string     `form:"order_by"`
 }
 
@@ -183,8 +183,8 @@ type ListUserActionLogRequest struct {
 	Username   *string    `form:"username"`
 	ActionType *string    `form:"action_type"`
 	Status     *string    `form:"status"`
-	StartTime  *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime    *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime  *time.Time `form:"start_time"`
+	EndTime    *time.Time `form:"end_time"`
 	OrderBy    string     `form:"order_by"`
 }
 
@@ -218,8 +218,8 @@ type ListRawMaterialPurchaseRequest struct {
 	PageSize      int        `form:"pageSize,default=10"`
 	RawMaterialID *uint      `form:"raw_material_id"`
 	Supplier      *string    `form:"supplier"`
-	StartTime     *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime       *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime     *time.Time `form:"start_time"`
+	EndTime       *time.Time `form:"end_time"`
 	OrderBy       string     `form:"order_by"`
 }
 
@@ -257,8 +257,8 @@ type ListRawMaterialStockLogRequest struct {
 	RawMaterialID *uint      `form:"raw_material_id"`
 	SourceType    *string    `form:"source_type"`
 	SourceID      *uint      `form:"source_id"`
-	StartTime     *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime       *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime     *time.Time `form:"start_time"`
+	EndTime       *time.Time `form:"end_time"`
 	OrderBy       string     `form:"order_by"`
 }
 
@@ -288,8 +288,8 @@ type ListFeedUsageRecordRequest struct {
 	PenID         *uint      `form:"pen_id"`
 	FeedFormulaID *uint      `form:"feed_formula_id"`
 	OperatorID    *uint      `form:"operator_id"`
-	StartTime     *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime       *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime     *time.Time `form:"start_time"`
+	EndTime       *time.Time `form:"end_time"`
 	OrderBy       string     `form:"order_by"`
 }
 
@@ -334,8 +334,8 @@ type ListMedicationLogRequest struct {
 	MedicationID *uint      `form:"medication_id"`
 	Reason       *string    `form:"reason"`
 	OperatorID   *uint      `form:"operator_id"`
-	StartTime    *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime      *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime    *time.Time `form:"start_time"`
+	EndTime      *time.Time `form:"end_time"`
 	OrderBy      string     `form:"order_by"`
 }
 
@@ -374,8 +374,8 @@ type ListPigBatchLogRequest struct {
 	PigBatchID *uint      `form:"pig_batch_id"`
 	ChangeType *string    `form:"change_type"`
 	OperatorID *uint      `form:"operator_id"`
-	StartTime  *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime    *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime  *time.Time `form:"start_time"`
+	EndTime    *time.Time `form:"end_time"`
 	OrderBy    string     `form:"order_by"`
 }
 
@@ -407,8 +407,8 @@ type ListWeighingBatchRequest struct {
 	Page       int        `form:"page,default=1"`
 	PageSize   int        `form:"pageSize,default=10"`
 	PigBatchID *uint      `form:"pig_batch_id"`
-	StartTime  *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime    *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime  *time.Time `form:"start_time"`
+	EndTime    *time.Time `form:"end_time"`
 	OrderBy    string     `form:"order_by"`
 }
 
@@ -437,8 +437,8 @@ type ListWeighingRecordRequest struct {
 	WeighingBatchID *uint      `form:"weighing_batch_id"`
 	PenID           *uint      `form:"pen_id"`
 	OperatorID      *uint      `form:"operator_id"`
-	StartTime       *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime         *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime       *time.Time `form:"start_time"`
+	EndTime         *time.Time `form:"end_time"`
 	OrderBy         string     `form:"order_by"`
 }
 
@@ -472,8 +472,8 @@ type ListPigTransferLogRequest struct {
 	TransferType  *string    `form:"transfer_type"`
 	OperatorID    *uint      `form:"operator_id"`
 	CorrelationID *string    `form:"correlation_id"`
-	StartTime     *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime       *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime     *time.Time `form:"start_time"`
+	EndTime       *time.Time `form:"end_time"`
 	OrderBy       string     `form:"order_by"`
 }
 
@@ -509,8 +509,8 @@ type ListPigSickLogRequest struct {
 	Reason            *string    `form:"reason"`
 	TreatmentLocation *string    `form:"treatment_location"`
 	OperatorID        *uint      `form:"operator_id"`
-	StartTime         *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime           *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime         *time.Time `form:"start_time"`
+	EndTime           *time.Time `form:"end_time"`
 	OrderBy           string     `form:"order_by"`
 }
 
@@ -546,8 +546,8 @@ type ListPigPurchaseRequest struct {
 	PigBatchID *uint      `form:"pig_batch_id"`
 	Supplier   *string    `form:"supplier"`
 	OperatorID *uint      `form:"operator_id"`
-	StartTime  *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime    *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime  *time.Time `form:"start_time"`
+	EndTime    *time.Time `form:"end_time"`
 	OrderBy    string     `form:"order_by"`
 }
 
@@ -581,8 +581,8 @@ type ListPigSaleRequest struct {
 	PigBatchID *uint      `form:"pig_batch_id"`
 	Buyer      *string    `form:"buyer"`
 	OperatorID *uint      `form:"operator_id"`
-	StartTime  *time.Time `form:"start_time" time_format:"rfc3339"`
-	EndTime    *time.Time `form:"end_time" time_format:"rfc3339"`
+	StartTime  *time.Time `form:"start_time"`
+	EndTime    *time.Time `form:"end_time"`
 	OrderBy    string     `form:"order_by"`
 }