diff --git a/MarkInfo.cs b/MarkInfo.cs
index 9270418..70e0d3b 100644
--- a/MarkInfo.cs
+++ b/MarkInfo.cs
@@ -198,7 +198,7 @@
             startPoint.X = selLine[0][0].X;
             startPoint.Y = selLine[0][0].Y;
             startPoint.Z = selLine[0][0].Z;
-            string desc0 = "起点标高：" + resFeature.GetFieldAsString("起始地面高") + "米";
+            string desc0 = "起点标高：" + resFeature.GetFieldAsFloat("起始地面高").ToString() + "米";
             MarkInfo markInfo0 = new MarkInfo();
             markInfo0.Desc = desc0;
             markInfo0.Point = startPoint;
@@ -207,7 +207,7 @@
             endPoint.X = selLine[0][selLine[0].Count - 1].X;
             endPoint.Y = selLine[0][selLine[0].Count - 1].Y;
             endPoint.Z = selLine[0][selLine[0].Count - 1].Z;
-            string desc1 = "终点标高：" + resFeature.GetFieldAsString("终止地面高") + "米";
+            string desc1 = "终点标高：" + resFeature.GetFieldAsFloat("终止地面高").ToString() + "米";
             MarkInfo markInfo1 = new MarkInfo();
             markInfo1.Desc = desc1;
             markInfo1.Point = endPoint;
@@ -369,7 +369,7 @@
             centerPoint.Y = point3d.Y;
             centerPoint.Z = point3d.Z;
 
-            String desc0 = "距离：" + selLine.GetSpaceLength(false, 6378137);
+            String desc0 = "距离：" + selLine.GetSpaceLength(false, 6378137).ToString("0.000") + "米";
 
             MarkInfo markInfo0 = new MarkInfo();
             markInfo0.Desc = desc0;