Find the official WeChat account of the hospital, pay attention to it and log in. There are many ways to log in. If you forget other ID numbers, you can log in. After logging in, click on the official WeChat account to send a message. Then there will be individuals or interactions at the bottom, and you can find them yourself. For example, the First Affiliated Hospital of Zhengzhou University has a WeChat card number inquiry step: pay attention to the official account of WeChat, the First Affiliated Hospital of Zhengzhou University, and log in. (Note: All major hospitals have branches. Fill in the correct hospital), send a message after logging in, the bottom column is guidance, diagnosis and treatment, interaction, click interaction, and an electronic medical card will appear. Click to display the medical card number.