diff --git a/packages/preset-umi/src/commands/generators/tailwindcss.ts b/packages/preset-umi/src/commands/generators/tailwindcss.ts
index 943cb62fe270..d15d4501de90 100644
--- a/packages/preset-umi/src/commands/generators/tailwindcss.ts
+++ b/packages/preset-umi/src/commands/generators/tailwindcss.ts
@@ -29,6 +29,8 @@ export default (api: IApi) => {
       });
 
       h.setUmirc('tailwindcss', {});
+      const existingPlugins = api.config?.extraPostCSSPlugins || [];
+      h.setUmirc('extraPostCSSPlugins', ['tailwindcss', ...existingPlugins]);
       h.appendInternalPlugin('@umijs/plugins/dist/tailwindcss');
       logger.info('Update .umirc.ts');