diff --git a/kernel/api/setting.go b/kernel/api/setting.go
index 2664f79e1..6ecd3917f 100644
--- a/kernel/api/setting.go
+++ b/kernel/api/setting.go
@@ -87,6 +87,10 @@ func setEditor(c *gin.Context) {
 		editor.PlantUMLServePath = "https://www.plantuml.com/plantuml/svg/~1"
 	}
 
+	if "" == editor.KaTexMacros {
+		editor.KaTexMacros = "{}"
+	}
+
 	model.Conf.Editor = editor
 	model.Conf.Save()
 
diff --git a/kernel/conf/editor.go b/kernel/conf/editor.go
index d787a41cf..461a78ff9 100644
--- a/kernel/conf/editor.go
+++ b/kernel/conf/editor.go
@@ -33,6 +33,7 @@ type Editor struct {
 	BlockRefDynamicAnchorTextMaxLen int      `json:"blockRefDynamicAnchorTextMaxLen"` // 块引动态锚文本最大长度
 	PlantUMLServePath               string   `json:"plantUMLServePath"`               // PlantUML 伺服地址
 	FullWidth                       bool     `json:"fullWidth"`                       // 是否使用最大宽度
+	KaTexMacros                     string   `json:"kaTexMacros"`                     // KeTex 宏定义
 }
 
 func NewEditor() *Editor {
@@ -51,5 +52,6 @@ func NewEditor() *Editor {
 		BlockRefDynamicAnchorTextMaxLen: 96,
 		PlantUMLServePath:               "https://www.plantuml.com/plantuml/svg/~1",
 		FullWidth:                       true,
+		KaTexMacros:                     "{}",
 	}
 }