1. First, the image size requirement for mobile Taobao shop signs is 750*580; open the Taobao seller center and click on the shop decoration in the shop management on the lower left.

2. Then on the opened shop decoration page, under "mobile terminal", click on the shop sign setting under the global.

3. Then move the mouse to the shop sign, and the words "set shop sign" will be displayed. Click it. On the pop-up shop sign setting page, move the mouse to the picture on the upper right.

4. After moving it up, the words "replace picture" will be displayed. Click it; when it appears on the page, click "upload", and then select the picture as the mobile shop sign in the window, and click "open".

5. After the upload is successful, click confirm, and on the next page, click "save", as shown in the figure below.

6. After saving, there will be corresponding changes on the left side of the store sign setting page. Now click Publish again, and it will prompt "Setting the store sign is successful". The sign on the Taobao mobile store is basically set up like this.

Extended information:

1. Taobao is the largest online retail and business district in the Asia-Pacific region. It was founded by Alibaba Group in May 2003. Taobao is a popular online shopping retail platform in China, with nearly 500 million registered users and more than 60 million regular visitors every day. At the same time, the number of online products per day has exceeded 800 million, and an average of 48,000 products are sold every minute.

2. As of the end of 2014, Taobao had nearly 500 million registered members, more than 120 million daily active users, and the number of online products reached 1 billion. In the C2C market, Taobao accounted for 95.1% of the market share. Taobao's development momentum on the mobile side is rapid. According to the latest mobile shopping report released by Analysys in 2014, the market share of mobile Taobao + Tmall reached 85.1%. So far, Taobao has created 4.677 million direct jobs.

3. With the expansion of Taobao's scale and the increase in the number of users, Taobao has also transformed from a single C2C online market to a comprehensive retail business district including C2C, distribution, auction, direct supply, crowdfunding, customization and other e-commerce models.