In view of the problem of electronic and firepower integrated multilayer air defense forces interception capability evaluation， regarding the ground-to-air radar jamming system， medium-range air defense missile， short-range air defense missile and antiaircraft weapon as multilayer multi-channel system composed of 4 layers of defense， the interception capability evaluation model of electronic and firepower integrated multi-layer and multi-channel air defense system based on finite waiting queuing system and loss queuing system is established. The example analysis shows that the method can provide a scientific assessment method to the effectiveness of electronic and firepower integrated multilayer air defense system and it can provide reference and basis for optimizing the deployment plan of air defense forces.