You are in the 3C digital category. Tmall stipulates that the first picture does not have a white background, and the second picture must have a white background. Most other categories require the first picture to have a white background, and others are not limited! Theoretically, in Taobao search, all the babies display the first picture, while in Tmall search, all the babies display the pictures with white background specified by this category, so in Taobao search, the pictures with 3C digital category display the first picture, but the first picture does not specify a white background, so most people will not use the pictures with white background to look good and eye-catching! Of course, Taobao market stores are not required. You can have a white background or other colors, as long as the text is not illegal! Taobao recommends the main picture with a white background, but it is only recommended and there is no regulation. For the sake of beauty, most people don't use a white background!