diff --git a/components/category/categoryService.js b/components/category/categoryService.js
index e69de29..a5b3552 100644
--- a/components/category/categoryService.js
+++ b/components/category/categoryService.js
@@ -0,0 +1,6 @@
+const Category = require('./categoryModel')
+const AppError = require('../../globalErrorHandler/AppError')
+
+module.exports.getAllCategories = async () => {
+    return Category.find().populate('parentId')
+}