diff --git a/src/tool/util.js b/src/tool/util.js
index b8f095c7..770fe315 100644
--- a/src/tool/util.js
+++ b/src/tool/util.js
@@ -672,6 +672,17 @@ function sketchToMask(sketchImage) {
 		img.src = sketchImage;
 	});
 }
+
+function isValidUrl(string) {
+	try {
+		const url = new URL(string)
+		// 通常我们只需要 http 或 https 协议
+		return url.protocol === "http:" || url.protocol === "https:"
+	} catch (err) {
+		return false
+	}
+}
+
 export {
   isEmail,
   getUploadUrl,