diff --git a/langguanApi/Model/CleanTransportation.cs b/langguanApi/Model/CleanTransportation.cs
index 59bca40..742d266 100644
--- a/langguanApi/Model/CleanTransportation.cs
+++ b/langguanApi/Model/CleanTransportation.cs
@@ -39,7 +39,7 @@
         /// <summary>
         /// 国五百分比
         /// </summary>
-        public string V5Percent { get; set; }
+        public string V5Percent { get; set; } = "0";
         /// <summary>
         /// 国五比例数量
         /// </summary>
@@ -47,7 +47,7 @@
         /// <summary>
         /// 国五运输量百分比
         /// </summary>
-        public string V5WeightPercent { get; set; }
+        public string V5WeightPercent { get; set; } = "0";
         /// <summary>
         /// 国五运输量比例
         /// </summary>
@@ -55,7 +55,7 @@
         /// <summary>
         /// 国六百分比
         /// </summary>
-        public string V6Percent { get; set; }
+        public string V6Percent { get; set; } = "0";
         /// <summary>
         /// 国六运输量
         /// </summary>
@@ -63,7 +63,7 @@
         /// <summary>
         /// 国六运输量百分比
         /// </summary>
-        public string V6WeightPercent { get; set; }
+        public string V6WeightPercent { get; set; } = "0";
         /// <summary>
         /// 国六运输量
         /// </summary>
@@ -71,7 +71,7 @@
         /// <summary>
         /// 电动百分比
         /// </summary>
-        public string ElectricPrecent { get; set; }
+        public string ElectricPrecent { get; set; } = "0";
         /// <summary>
         /// 电动运输量
         /// </summary>
@@ -79,7 +79,7 @@
         /// <summary>
         /// 电动运输量百分比
         /// </summary>
-        public string ElectricWeightPrecent { get; set; }
+        public string ElectricWeightPrecent { get; set; } = "0";
         /// <summary>
         /// 电动运输量
         /// </summary>
@@ -87,7 +87,7 @@
         /// <summary>
         /// 其他百分比
         /// </summary>
-        public string OtherPrecent { get; set; }
+        public string OtherPrecent { get; set; } = "0";
         /// <summary>
         /// 其他运输量
         /// </summary>
@@ -95,7 +95,7 @@
         /// <summary>
         /// 其他运输量百分比
         /// </summary>
-        public string OtherWeightPrecent { get; set; }
+        public string OtherWeightPrecent { get; set; } = "0";
         /// <summary>
         /// 其他运输量
         /// </summary>
diff --git a/langguanApi/Service/TransportService.cs b/langguanApi/Service/TransportService.cs
index a881e89..14922b4 100644
--- a/langguanApi/Service/TransportService.cs
+++ b/langguanApi/Service/TransportService.cs
@@ -119,11 +119,13 @@ namespace langguanApi.Service
             {
                 if (!string.IsNullOrWhiteSpace(input.startTime))
                 {
-                    result.cleans.Where(p => Convert.ToDateTime(p.Time) >= Convert.ToDateTime(input.startTime)).ToList();
+                    //c#集合筛选大于开始时间的数据
+                    result.cleans = result.cleans.Where(p => DateTime.Parse(p.Time) >= DateTime.Parse(input.startTime)).ToList();
+
                 }
                 if (!string.IsNullOrWhiteSpace(input.endTime))
                 {
-                    result.cleans.Where(p => Convert.ToDateTime(p.Time) <= Convert.ToDateTime(input.endTime)).ToList();
+                    result.cleans = result.cleans.Where(p => DateTime.Parse(p.Time) <= DateTime.Parse(input.endTime)).ToList();
                 }
                 result.cleans = result.cleans.Skip(input.current - 1).Take(input.pageSize).ToList();
             }