diff --git a/kernel/api/extension.go b/kernel/api/extension.go
index e8b2c2993..693aff3ae 100644
--- a/kernel/api/extension.go
+++ b/kernel/api/extension.go
@@ -224,13 +224,6 @@ func extensionCopy(c *gin.Context) {
 		})
 
 		tree, withMath = model.HTML2Tree(dom, luteEngine)
-		if nil == tree {
-			md, withMath, _ = model.HTML2Markdown(dom, luteEngine)
-			if withMath {
-				luteEngine.SetInlineMath(true)
-			}
-			tree = parse.Parse("", []byte(md), luteEngine.ParseOptions)
-		}
 	} else {
 		tree = parse.Parse("", []byte(md), luteEngine.ParseOptions)
 	}
diff --git a/kernel/api/lute.go b/kernel/api/lute.go
index 6381bb485..4bcecb1f3 100644
--- a/kernel/api/lute.go
+++ b/kernel/api/lute.go
@@ -23,6 +23,7 @@ import (
 	"strings"
 
 	"github.com/88250/gulu"
+	"github.com/88250/lute"
 	"github.com/88250/lute/ast"
 	"github.com/88250/lute/parse"
 	"github.com/88250/lute/render"
@@ -81,13 +82,6 @@ func html2BlockDOM(c *gin.Context) {
 	luteEngine.SetHTMLTag2TextMark(true)
 	luteEngine.SetHTML2MarkdownAttrs([]string{"alias", "memo", "bookmark", "custom-*"})
 	tree, _ := model.HTML2Tree(dom, luteEngine)
-	if nil == tree {
-		md, withMath, _ := model.HTML2Markdown(dom, luteEngine)
-		if withMath {
-			luteEngine.SetInlineMath(true)
-		}
-		tree = parse.Parse("", []byte(md), luteEngine.ParseOptions)
-	}
 	if nil == tree {
 		ret.Data = "Failed to convert"
 		return
@@ -191,6 +185,13 @@ func html2BlockDOM(c *gin.Context) {
 	parse.TextMarks2Inlines(tree) // 先将 TextMark 转换为 Inlines https://github.com/siyuan-note/siyuan/issues/13056
 	parse.NestedInlines2FlattedSpansHybrid(tree, false)
 
+	md, err := lute.FormatNodeSync(tree.Root, luteEngine.ParseOptions, luteEngine.RenderOptions)
+	if nil != err {
+		ret.Data = "Failed to convert"
+		return
+	}
+
+	tree = parse.Parse("", []byte(md), luteEngine.ParseOptions)
 	renderer := render.NewProtyleRenderer(tree, luteEngine.RenderOptions, luteEngine.ParseOptions)
 	output := renderer.Render()
 	ret.Data = gulu.Str.FromBytes(output)