diff --git a/Learn.Archives.API/Controllers/ExamClassInfoController.cs b/Learn.Archives.API/Controllers/ExamClassInfoController.cs
index 1318266..e3f022b 100644
--- a/Learn.Archives.API/Controllers/ExamClassInfoController.cs
+++ b/Learn.Archives.API/Controllers/ExamClassInfoController.cs
@@ -116,6 +116,12 @@ namespace Learn.Archives.API.Controllers
                     }
                     var grade = GradeHelper.GetStudentGradeBaseByGrade(s.Grade);
                     var sub = ImportExamInfoSubjectDic(s);
+                    if(sub is null)
+                    {
+                        s.Error = "遇到了无法处理成绩值! 请检查本行的成绩";
+                        errorExcelInfo.Add(s);
+                        return null;
+                    }
                     var name = s.Class  + s.Student;
                     if (!userDic.ContainsKey(name))
                     {
@@ -305,12 +311,12 @@ namespace Learn.Archives.API.Controllers
             var res = new Dictionary<SubjectEnum, decimal>();
             foreach (var item in c)
             {
-                if(string.IsNullOrWhiteSpace(item.Value))
+                if (string.IsNullOrWhiteSpace(item.Value))
                     res.Add(item.Key, 0m);
                 else if (decimal.TryParse(item.Value.Trim(), out decimal r))
                     res.Add(item.Key, r);
                 else
-                    res.Add(item.Key, 0m);
+                    return null;
             }
             return res;
         }
@@ -350,8 +356,9 @@ namespace Learn.Archives.API.Controllers
             var db = sService.Context;
             foreach (var schoolArr in userInfoArr.GroupBy(s => s.SchoolId))
             {
-
                 var school = await sService.GetFirstAsync(s => s.Id == schoolArr.Key);
+                if(school is null)
+                    continue;
                 var classArr = await db.Queryable<Classes>()
                     .Where(c => c.SchoolId == school.Id &&
                         c.GradeLevel == exam.GradeLevel &&