diff --git a/HJGL_DS/FineUIPro.Web/HJGL/DataIn/PipelineGrid.aspx.cs b/HJGL_DS/FineUIPro.Web/HJGL/DataIn/PipelineGrid.aspx.cs
index 3ae6571..a72c770 100644
--- a/HJGL_DS/FineUIPro.Web/HJGL/DataIn/PipelineGrid.aspx.cs
+++ b/HJGL_DS/FineUIPro.Web/HJGL/DataIn/PipelineGrid.aspx.cs
@@ -346,7 +346,11 @@ namespace FineUIPro.Web.HJGL.DataIn
                                                     isoInfo.MaterialStandardId = materialStandards.Where(x => x.MaterialStandardName == row[dataColumn.ColumnName].ToString()||x.MaterialStandardCode == row[dataColumn.ColumnName].ToString()).Select(x => x.MaterialStandardId).FirstOrDefault();  
                                                     break;
                                                 case "介质":
-                                                    isoInfo.SER_ID = services.Where(x => x.SER_Name == row[dataColumn.ColumnName].ToString() || x.SER_Code == row[dataColumn.ColumnName].ToString()).Select(x => x.SER_ID).FirstOrDefault();
+                                                     var SER_ID = services.Where(x => x.SER_Name == row[dataColumn.ColumnName].ToString() || x.SER_Code == row[dataColumn.ColumnName].ToString()).Select(x => x.SER_ID).FirstOrDefault();
+                                                    if (!string.IsNullOrEmpty(SER_ID))
+                                                    {
+                                                        isoInfo.SER_ID = SER_ID;
+                                                    }
                                                     break;
                                                 case "管道类别":
                                                     isoInfo.PipeLineClass = row[dataColumn.ColumnName].ToString();