According to the standard, the plaque * * * is divided into two parts, the upper 3/4 part has a blue background and the lower 1/4 part has a yellow background. The use of medical and health institutions logo, the content is strictly in accordance with the approved name of medical and health institutions and medical subjects. The number of medical institutions is compiled by each county and district according to the regional setting plan, and is used on the door plaque, which is the number to identify the number of medical institutions, not the registration number of medical institutions. Numbers consist of letters and numbers.