Doudian is an e-commerce platform launched by Douyin. If you want to enable e-commerce permissions on Doudian, you need to meet the following conditions:

1. Have a Douyin account. To enable e-commerce permissions on Doudian, you need to register a Douyin account first.

2. Have a personal or corporate account with real-name authentication. To enable e-commerce permissions on Doudian, you need to undergo real-name authentication to ensure the authenticity and legitimacy of the account.

3. Meet Doudian's store opening conditions. Doudian has certain requirements for store opening conditions, such as having certain sales experience and having a stable supply channel.

If you meet the above conditions, you can follow the steps below to enable e-commerce permissions:

1. Open the Douyin APP. Open the Douyin APP on your phone.

2. Enter Doudian. In the Douyin APP, select the "Doudian" option to enter the Doudian page.

3. Enable e-commerce permissions. On the Doudian page, select the "I want to open a store" option, and then follow the prompts to complete real-name authentication and open a store.

It should be noted that Doudian has certain requirements for store opening conditions and review standards. If your account does not meet the requirements, you may not be able to enable e-commerce permissions. At the same time, enabling e-commerce permissions requires compliance with relevant laws and regulations and platform regulations to ensure that you do not infringe on the rights and interests of others and violate platform regulations.