The process of reporting a Douyin seller is as follows:

1. In Douyin, find the homepage or video of the seller who needs to be reported.

2. Click the "..." icon in the upper right corner of the seller's homepage or video.

3. Select the "Report" option.

4. Subsequently, the Douyin system will ask you to select the reason for reporting and fill in detailed information, such as infringement. You need to select the appropriate option to report based on the specific situation. The process of complaining about infringement by Taobao sellers is as follows:

1. Log in to Taobao and enter the Taobao intellectual property protection platform page.

2. Select the type of infringement that requires a complaint, such as copyright infringement, trademark, patent, etc.

3. According to the system prompts, fill in the complaint-related information, upload supporting materials, and wait for processing by the Taobao platform.