diff --git a/Scripts/NodePort.cs b/Scripts/NodePort.cs
index fea85c8..4cfca4d 100644
--- a/Scripts/NodePort.cs
+++ b/Scripts/NodePort.cs
@@ -1,5 +1,6 @@
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
 using System.Reflection;
 using UnityEngine;
 
@@ -291,12 +292,25 @@ namespace XNode {
             else output = port;
             // If there isn't one of each, they can't connect
             if (input == null || output == null) return false;
+            // Check input type constraints
+            if (input.typeConstraint == XNode.Node.TypeConstraint.Inherited && !input.ValueType.IsAssignableFrom(output.ValueType)
+                // Judgment conversion
+                && TypeDescriptor.GetConverter(input.ValueType).CanConvertTo(output.ValueType)) return false;
+
             if (input.typeConstraint == XNode.Node.TypeConstraint.Strict && input.ValueType != output.ValueType) return false;
-            if (input.typeConstraint == XNode.Node.TypeConstraint.InheritedInverse && !output.ValueType.IsAssignableFrom(input.ValueType)) return false;
+            if (input.typeConstraint == XNode.Node.TypeConstraint.InheritedInverse && !output.ValueType.IsAssignableFrom(input.ValueType)
+                // Judgment conversion
+                && TypeDescriptor.GetConverter(output.ValueType).CanConvertTo(input.ValueType)) return false;
+
             // Check output type constraints
-            if (output.typeConstraint == XNode.Node.TypeConstraint.Inherited && !input.ValueType.IsAssignableFrom(output.ValueType)) return false;
+            if (output.typeConstraint == XNode.Node.TypeConstraint.Inherited && !input.ValueType.IsAssignableFrom(output.ValueType)
+                // Judgment conversion
+                && TypeDescriptor.GetConverter(input.ValueType).CanConvertTo(output.ValueType)) return false;
+
             if (output.typeConstraint == XNode.Node.TypeConstraint.Strict && input.ValueType != output.ValueType) return false;
-            if (output.typeConstraint == XNode.Node.TypeConstraint.InheritedInverse && !output.ValueType.IsAssignableFrom(input.ValueType)) return false;
+            if (output.typeConstraint == XNode.Node.TypeConstraint.InheritedInverse && !output.ValueType.IsAssignableFrom(input.ValueType)
+                // Judgment conversion
+                && TypeDescriptor.GetConverter(output.ValueType).CanConvertTo(input.ValueType)) return false;
             // Success
             return true;
         }