Abstract: Because the infectious diseases with the possibility of repeated infection are not hindered by antibodies or vaccines, their spread ranges are more extensive than ordinary infectious diseases, which seriously endangers human physical and mental health and affects social harmony and stability. It is necessary to explore the transmission law of infectious diseases, so as to formulate more targeted coping strategies. Based on the classical infectious disease model, SI1SI2R model of considering the characteristics of repeated infection of infectious diseases is constructed, and the interaction and transmission rules between heterogeneous individuals are defined. The transmission law of infectious diseases with repetitive infection characteristics among heterogeneous groups is explored by using ABM simulation modeling method. The simulation results show that the infection range of this kind of infectious diseases increases with the increase of secondary infection rate, and the composition of heterogeneous transmission groups not only affects the proportion of infected people, but also affects the time to reach the peak. Therefore, it is not only necessary to reduce the possibility of repeated infection of such diseases, but also necessary to put forward more efficient management schemes according to the heterogeneity of transmission groups.

Key words: infectious disease, simulation, ABM, transmission law