diff --git a/packages/kit/src/build.ts b/packages/kit/src/build.ts
index b28384397c1..b602b8a45d8 100644
--- a/packages/kit/src/build.ts
+++ b/packages/kit/src/build.ts
@@ -117,19 +117,27 @@ export function extendViteConfig (
 /**
  * Append Webpack plugin to the config.
  */
-export function addWebpackPlugin (plugin: WebpackPluginInstance, options?: ExtendWebpackConfigOptions) {
+export function addWebpackPlugin (plugin: WebpackPluginInstance | WebpackPluginInstance[], options?: ExtendWebpackConfigOptions) {
   extendWebpackConfig((config) => {
     config.plugins = config.plugins || []
-    config.plugins.push(plugin)
+    if (Array.isArray(plugin)) {
+      config.plugins.push(...plugin)
+    } else {
+      config.plugins.push(plugin)
+    }
   }, options)
 }
 
 /**
  * Append Vite plugin to the config.
  */
-export function addVitePlugin (plugin: VitePlugin, options?: ExtendViteConfigOptions) {
+export function addVitePlugin (plugin: VitePlugin | VitePlugin[], options?: ExtendViteConfigOptions) {
   extendViteConfig((config) => {
     config.plugins = config.plugins || []
-    config.plugins.push(plugin)
+    if (Array.isArray(plugin)) {
+      config.plugins.push(...plugin)
+    } else {
+      config.plugins.push(plugin)
+    }
   }, options)
 }