Legal basis: Item (6) of Article 2 of the Notice on Further Promoting the Action of "Internet+Medical Health" and "Five Ones" Services, so as to realize the "One Code for One Service" health code. All localities should rely on the national integrated government service platform, implement the mutual recognition mechanism and rules of health code information, make clear that the health code information of cross-regional floating population is credible and available in all regions, effectively facilitate personnel travel and cross-provincial mobility, and realize unified policies, unified standards, mutual recognition between countries and one code. In low-risk areas, except for special places and special personnel, health codes should generally not be checked. For the elderly and other groups who do not use or operate smart phones, alternative measures can be taken, such as reading identity cards, showing paper certificates, handling by relatives and friends, or binding multiple epidemic prevention health codes by one person. Strengthen the standardized use of epidemic prevention health code data, strengthen data security management, and effectively protect personal privacy. Medical institutions above the second level should set up a green channel without health codes at the entrance, and be equipped with personnel to help inquire about epidemic prevention health codes, assist in manually completing epidemiological history surveys, shorten waiting time, and provide more detailed and appropriate services for the elderly and other groups.