This paper aims to explore the relationship between population change, community development differences and fire loss to help national government officials in deciding Population policy and Damage Prevention policy. This paper adopt 1999~2016 panel data to construct the regression model test causal relationship between the crime and composition of population growth in recent years, and the interactive effect of community development will be considered. The composition of population growth will be divided into natural increase (the number of births minus the number of deaths) and social increase (the population increase by migration). The results of this paper show that community development will decrease the fire probability. In addition, community development will negative moderate the relationship between natural increase and fire probability. And community development will positively moderate the relationship between social increase and fire probability.