After opening a store on Taobao, in order to operate the store backend, you must enter the Qianniu workbench through the Qianniu Seller Center or Qianniu's client.

The following are the specific authorization and operation steps:

1. First, you need to click "Qianniu Seller Center" in the upper right corner of the Taobao homepage, and then click "Free Store".

2. Click "Personal Store" on the page that comes out, fill in the Taobao store name, mobile phone number and verification code.

3. Next, perform Alipay authentication. You can download the Alipay software, log in to the store account, scan the QR code, upload your ID card and fill in the business address.

4. After completing the Alipay authentication, perform real-person authentication.

5. After completing the above steps, you can successfully open a store.

6. Then, you can download and install the Qianniu software on your computer or mobile phone, and log in to the Qianniu backend directly with your store account. In Qianniu Workbench, you can manage Taobao stores, including publishing products, modifying store information, etc.