Abstract: During the firing of the artillery, under the high temperature and high pressure environment, the interaction between the rotating band and the barrel can cause the structural size change of the forcing cone which directly affects the ballistic performance of the gun and the life of the barrel. In order to study the friction and wear laws of the forcing cone during the continuous engraving process, a refined finite element mesh model of the forcing cone structure was established. Based on the projectile-barrel coupling thermodynamic finite element model, the effects of the temperature and pressure of gunpowder gas, the friction coefficient between the rotating band and the forcing cone were comprehensively considered, and combined with the Archard wear model, the numerical calculation method was used to obtain the forcing law of the forcing cone and the amount of wear due to friction under the continuous shooting environment. Analysis results indicate that, the developed refined finite element mesh model of the forcing cone structure possesses an evident effect in expressing the friction and wear of the forcing cone, the structure of rotating band affects the forcing law and the amount of the forcing cone evidently, there is a serious force and wear in the transition part of rifle forepart positive thread under single or continuous shots.