"Xuzhou Health Treasure" can realize independent health declaration, epidemic prevention declaration, associated opening of Su Kang code, trip code and other functions. The public can enter "Xuzhou Health Treasure" through WeChat and Alipay search fields, and click to enter the applet. When you use it for the first time, you can use it by entering your name, phone number, SMS verification code and ID number for face recognition. You can also scan the code in major shopping malls, railway stations, bus stations, airports, traffic checkpoints or other public places where QR codes are posted. Xuzhou Health Bao needs to be used based on smart phones and related application software. For the elderly, children and those who can't register for use temporarily for other objective reasons and don't have a smart phone, the family members of their peers will help them register. If there is no family member of the companion, please show the pre-printed run-length encoding and health code, and abide by various epidemic prevention and control policies. "Xuzhou Health Bao" mainly provides services based on resident ID cards, but it is not supported by outsiders at present. The color of "Xuzhou Jianbao" conforms to the color rules of Su Kang code. Red team said that it is necessary to centralize and isolate medical observation, and local epidemic prevention and control institutions should strictly manage it; The yellow code indicates the need for family health monitoring or further risk investigation and nucleic acid detection; The green code indicates that there is no abnormality and it can pass normally.