Check it after entering through the small program "International Health Code for Epidemic Prevention". Users can view their own health information filling records at any time, click "My" to enter the personal center, and then view all the previous filling records in "My Health Filling Records". The health code is valid within 24 hours after each health information is filled in, and 2 hours before the expiration, the applet will send a reminder that it is about to expire through WeChat. Please pay attention to fill it out in time.

Through the color of health code, you can quickly identify whether a person has passed through provinces and cities with serious epidemic situation and whether he has directly or indirectly contacted infected people. Then through big data analysis, you can directly lock and find people who may be infected. This has important practical significance in the early stage of epidemic prevention and control!