The title of this work is "visual analysis of class A and B infectious diseases". It mainly introduces and analyzes the data of class A and B infectious diseases in recent years. In the design, the overall use of navy blue color, with gold, white and other bright fonts, in sharp contrast with the background, more clearly show the details and data. In the data display, the People's Republic of China maps, bar charts, pie charts, line charts, word clouds, illustrations and other forms are used to facilitate diversified data display. In the design of the web page, the 1. is used to 2. three-level pages, step by step, to help users better understand Class A and B infectious diseases, and timely cognition, prevention and treatment of related diseases.