diff --git a/New_College.Api/appsettings.json b/New_College.Api/appsettings.json
index 37c2ef4..5a5fb8d 100644
--- a/New_College.Api/appsettings.json
+++ b/New_College.Api/appsettings.json
@@ -26,7 +26,7 @@
       "Name": "New_College"
     }
   },
-  "urls": "http://*:8083", // IIS 部署，注释掉
+  "urls": "http://*:8082", // IIS 部署，注释掉
   "AllowedHosts": "*",
   "AppSettings": {
     "RedisCachingAOP": {
diff --git a/New_College.Model/ViewModels/Query/UniversityQuery.cs b/New_College.Model/ViewModels/Query/UniversityQuery.cs
index 33244b5..160115d 100644
--- a/New_College.Model/ViewModels/Query/UniversityQuery.cs
+++ b/New_College.Model/ViewModels/Query/UniversityQuery.cs
@@ -12,7 +12,7 @@ namespace New_College.Model.ViewModels
         /// <summary>
         /// 学科层次
         /// </summary>
-        public int SubjectLevel { get; set; }
+        public int? SubjectLevel { get; set; }
         /// <summary>
         /// 省市区名称
         /// </summary>
@@ -34,17 +34,17 @@ namespace New_College.Model.ViewModels
         /// <summary>
         /// 是否985 0、否，1、是
         /// </summary>
-        public int Nhef { get; set; } = -1;
+        public int? Nhef { get; set; }
 
         /// <summary>
         /// 是否211 0、否，1、是
         /// </summary>
-        public int Sff { get; set; } = -1;
+        public int? Sff { get; set; }
 
         /// <summary>
         /// 是否双一流 0、否，1、是
         /// </summary>
-        public int Syl { get; set; } = -1;
+        public int? Syl { get; set; }
     }
 
     public class UniversityRankQuery
diff --git a/New_College.Services/D_LongIdMapServices.cs b/New_College.Services/D_LongIdMapServices.cs
index 8c25e9b..9e9b7f2 100644
--- a/New_College.Services/D_LongIdMapServices.cs
+++ b/New_College.Services/D_LongIdMapServices.cs
@@ -113,14 +113,14 @@ namespace New_College.Services
         {
             Expression<Func<D_University, bool>> expression = Expressionable.Create<D_University>()
                   .And(x => x.IsDelete == false)
-                     .AndIF(query.AreaName.Any() && !query.AreaName.Contains("全国"), x => SqlFunc.ContainsArray(query.AreaName, x.Area_Name))
-                        .AndIF(query.Nature.Any(), x => SqlFunc.ContainsArray(query.Nature, x.Nature))
-                         .AndIF(query.Type.Any(), x => SqlFunc.ContainsArray(query.Type, x.Type))
-                          .AndIF(query.SubjectLevel > 0, x => x.Subject_Level == query.SubjectLevel)
-                            .AndIF(query.Nhef > 0, x => x.Nhef == query.Nhef)
-                              .AndIF(query.Sff > 0, x => x.Sff == query.Sff)
-                                .AndIF(query.Syl > 0, x => x.Syl == query.Syl)
-                                    .AndIF(!string.IsNullOrWhiteSpace(query.Name), u => SqlFunc.Contains(query.Name, u.Name))
+                     .AndIF(query.AreaName!=null&& query.AreaName.Any() && !query.AreaName.Contains("全国"), x => SqlFunc.ContainsArray(query.AreaName, x.Area_Name))
+                        .AndIF(query.Nature != null && query.Nature.Any(), x => SqlFunc.ContainsArray(query.Nature, x.Nature))
+                         .AndIF(query.Nature != null && query.Type.Any(), x => SqlFunc.ContainsArray(query.Type, x.Type))
+                          .AndIF(query.SubjectLevel.HasValue, x => x.Subject_Level == query.SubjectLevel)
+                            .AndIF(query.Nhef.HasValue, x => x.Nhef == query.Nhef)
+                              .AndIF(query.Sff.HasValue, x => x.Sff == query.Sff)
+                                .AndIF(query.Syl.HasValue, x => x.Syl == query.Syl)
+                                    .AndIF(!string.IsNullOrWhiteSpace(query.Name), u => SqlFunc.Contains(query.Name,u.Name))
                                     .ToExpression();
 
             var info = await d_UniversityRepository.QueryPage(expression, query.PageIndex, query.PageSize, "Rank Asc");