Abstract: The forest is an important natural resource of the country, a good environment for the survival of wild animals and a material basis for people's life. Forest resources can not only maintain ecological balance, but also promote national economic development and social stability, so forest fire prevention and control is of great significance. Taking the "3.30" Muli fire as an example, the causes of this fire was obtained through analyzing the changes of precipitation, temperature and other changes over the years and the characteristics of the natural environment in this area, and corresponding countermeasures and suggestions were put forward in an exploratory way, which would have certain reference value for the forest fire prevention and fire rescue.