This paper based on the kinetic-based simulation approach studied the thermal safety problems of cylindrical Catharine.The measuring methods of pyrotechnic composition's thermodynamic and thermophysical parameters were given; On the basis of the experimental studies,established mathematical model of thermal autoignition of a cylindrical Catharine,and the concept of the equivalent Biot number was put forward based on the definition of thermal resistance,the effect of packaging paper cartridge on the boundary...