diff --git a/Sinvo.EplanHpD.Plugin.WPFUI/ViewModel/MainViewModel.Check.cs b/Sinvo.EplanHpD.Plugin.WPFUI/ViewModel/MainViewModel.Check.cs
index 720c17e..6fddbb5 100644
--- a/Sinvo.EplanHpD.Plugin.WPFUI/ViewModel/MainViewModel.Check.cs
+++ b/Sinvo.EplanHpD.Plugin.WPFUI/ViewModel/MainViewModel.Check.cs
@@ -174,6 +174,14 @@ namespace Sinvo.EplanHpD.Plugin.WPFUI.ViewModel
                     SetItemError(item, "未匹配到线材大小！");
                 }
             }
+            else
+            {
+                if (CheckUseDiscoloration(item.Imprint))
+                {
+                    SetItemError(item, "未匹配到变色套（绝缘软套）！");
+
+                }
+            }
         }
         /// <summary>
         /// 检查引用的端子
@@ -385,5 +393,41 @@ namespace Sinvo.EplanHpD.Plugin.WPFUI.ViewModel
                 }
             }
         }
+        /// <summary>
+        /// 检查是否使用变色套
+        /// </summary>
+        /// <param name="imprint"></param>
+        /// <returns></returns>
+        private bool CheckUseDiscoloration(string imprint)
+        {
+            var imprintConditions = new List<(string Prefix, WireFlagType? FlagType)>
+                {
+                    ("L1", WireFlagType.Dual),
+                    ("R", WireFlagType.Single ),
+                    ("L1", WireFlagType.Mix ),
+                    ("R", WireFlagType.Mix ),
+
+                    ("L2", WireFlagType.Dual ),
+                    ("S", WireFlagType.Single ),
+                    ("L2", WireFlagType.Mix ),
+                    ("S", WireFlagType.Mix ),
+
+                    ("L3", WireFlagType.Dual ),
+                    ("T", WireFlagType.Single ),
+                    ("L3", WireFlagType.Mix ),
+                    ("T", WireFlagType.Mix ),
+
+                    ("PE", null )
+                };
+            // 检查印记是否按照规范开头
+            foreach (var condition in imprintConditions)
+            {
+                if (imprint.StartsWith(condition.Prefix) && (condition.FlagType == null || FlagType == condition.FlagType))
+                {
+                    return true;
+                }
+            }
+            return false;
+        }
     }
 }