The steps to delete categories in Taobao favorites are as follows:

1. After opening the mobile Taobao software on your mobile phone, click My Taobao in the lower right corner, as shown below.

2. After entering this page, click "Favorites" to enter the favorites page, as shown below.

3. Click My Category to enter the favorites category page, and various categories of your favorites will appear, as shown below.

4. Click the ellipsis symbol on the right side of an existing category to manage, edit or delete existing product categories. Click Delete to delete the category in Taobao favorites.