BACKGROUND The epidemic spreads in the households, schools, workplaces and communities. For the infectious individuals, some are symptomatic, some are asymptomatic. The symptomatic individuals won’t go to school, workplace and community, they stay in households. Thus the symptomatic individuals transmit the disease only in the households. The asymptomatic can infect other susceptible individuals in all settings. During the spread of the epidemic, the symptomatic individuals in the household/workplace/class can trigger their neighbors to adopt the protected behavior. Besides, the peer pressure (i.e., many of his neighbors adopting the behavior) can also lead the adoption of the protected behavior. Meanwhile, the adopted individuals can also recover to the susceptible, and they can adopt the behavior again once these condition meets. Besides, if an individual adopts the protected behavior, the probability that he/she will be infected by the infectious contact is reduced in all settings. Epidemic spreading Model The epidemic spreading process is described by the SEIR model, as shown in Fig. 1,