During the 45^thweek of 2023, there were a total of 14,744 cases of 16 kinds of legal infectious diseases reported, and 1 case died in Beijing. The top five diseases with a large number of cases are Influenza, Hand, Foot and Mouth Disease, COVID-19, Other Infectious Diarrhea, and Viral Hepatitis, accounting for 97.0% of the total number of cases of legal infectious diseases.