Analysis of smoking transmission based on the SIR

China is the world's largest consumer of tobacco and the world's largest victim of tobacco, so I hope to solve the problem of smoking transmission, which is important to control the scale of its transmission and reduce the harm to public health and socioeconomic development. In this paper, we use the infectious disease dynamics model (SIR) to solve the problem of smoking transmission. This paper introduces the SIR model as the basis and then establishes three new models to analyze the spread of smoking, and then calculates the Basic reproduction number according to the disease free equilibrium of the three models. Finally, the conclusions of the three models are used to propose corresponding countermeasures and suggestions, so as to analyze and solve the problem of the spread of smoking and provide a reference. The three models are used to calculate the Basic reproduction number.