diff --git a/Assets/Editor/FrameAnimation/FrameAnimationGraphAuthoringServices.cs b/Assets/Editor/FrameAnimation/FrameAnimationGraphAuthoringServices.cs
index aa2216769..764892ae4 100644
--- a/Assets/Editor/FrameAnimation/FrameAnimationGraphAuthoringServices.cs
+++ b/Assets/Editor/FrameAnimation/FrameAnimationGraphAuthoringServices.cs
@@ -403,7 +403,7 @@ namespace AibisDream.FrameAnimation.Editor
 
         public static string MakeUniqueFlowId(FrameAnimationGraph graph, AnimationNode node)
         {
-            var root = (string.IsNullOrWhiteSpace(node?.DisplayName) ? "Animation" : node.DisplayName) + "Flow";
+            var root = (string.IsNullOrWhiteSpace(node?.DisplayName) ? "Animation" : node.DisplayName) + "_Flow";
             var candidate = root;
             var suffix = 2;
             while (!FrameAnimationAssetOperations.IsPlayableIdAvailable(graph, candidate))
diff --git a/Assets/Tests/FrameAnimation/EditMode/FrameAnimationGraphAuthoringTests.cs b/Assets/Tests/FrameAnimation/EditMode/FrameAnimationGraphAuthoringTests.cs
index 360c5a07a..22617bf93 100644
--- a/Assets/Tests/FrameAnimation/EditMode/FrameAnimationGraphAuthoringTests.cs
+++ b/Assets/Tests/FrameAnimation/EditMode/FrameAnimationGraphAuthoringTests.cs
@@ -92,10 +92,10 @@ namespace AibisDream.FrameAnimation.Tests.EditMode
         {
             var entry = AddNode("entry", "Idle");
             var other = AddNode("other", "Idle");
-            Assert.That(FrameAnimationGraphMutationService.MakeUniqueFlowId(graph, entry), Is.EqualTo("IdleFlow"));
+            Assert.That(FrameAnimationGraphMutationService.MakeUniqueFlowId(graph, entry), Is.EqualTo("Idle_Flow"));
             Assert.That(FrameAnimationGraphMutationService.CreateFlow(
-                graph, entry, "IdleFlow", "Idle", out var flow, out var error), Is.True, error);
-            Assert.That(FrameAnimationGraphMutationService.MakeUniqueFlowId(graph, other), Is.EqualTo("IdleFlow2"));
+                graph, entry, "Idle_Flow", "Idle", out var flow, out var error), Is.True, error);
+            Assert.That(FrameAnimationGraphMutationService.MakeUniqueFlowId(graph, other), Is.EqualTo("Idle_Flow2"));
             Assert.That(FrameAnimationGraphMutationService.CreateFlow(
                 graph, entry, "OtherFlow", "Other", out _, out error), Is.False);
             StringAssert.Contains("入口", error);