Based on Peirce's semiotics perspective, this study interpreted the health code from the three dimensions of representamen, object and interpretant. The results showed that health code is co‐formed by icon and color symbol, displaying the spirit and will of Chinese people during the COVID‐19 epidemic and best wishes in the future. Second, this study deeply interpreted the implications of the health code, which mainly displayed unique regional cultures of every province and various Chinese national cultures. The contribution of "Chinese wisdom" to the prevention and control of the COVID‐19 is reflected as well.