Since the beginning of the 21st century, infectious disease-related public health events represented by the SARS incident, the H7N9 avian in uenza epidemic, the Ebola epidemic, and the New Coronary Pneumonia epidemic have occurred frequently, seriously endangering human life and health. Landscape architecture plays an essential role in optimizing the natural environment, improving the climate, and improving public health. It should play a role in responding to public health crises. Based on the analysis of the history of landscape gardens to promote public health and the characteristics of the transmission of infectious diseases. This article proposes that landscape gardens should respond to the occurrence of contagious diseases from three aspects: controlling the source of infection, blocking the transmission route, and healing susceptible people and communication strategies.