diff --git a/PEIS/View/Enrollment/NewEnrollmentPersonForm.cs b/PEIS/View/Enrollment/NewEnrollmentPersonForm.cs
index 7013d08..c3771fe 100644
--- a/PEIS/View/Enrollment/NewEnrollmentPersonForm.cs
+++ b/PEIS/View/Enrollment/NewEnrollmentPersonForm.cs
@@ -203,7 +203,7 @@ namespace PEIS.View.Enrollment
             WorkYears.Text = item?.WorkYears;
             HazardYears.Text = item?.HazardYears;
 
-            if (item.ExamType.Contains("职业"))
+            if (item.ExamType != null && item.ExamType.Contains("职业"))
             {
                 HazardFactorsComboBox.SetEditValue(item?.HazardFactors.Split(';').Select(s => (object)s.Trim()).ToList());
             }