The paper built the private enterprises and military enterprises’ concept game model, and proposed the private enterprises and military enterprises’ game assumptions based on the current characteristic of army-civilian’s integration; secondly, depending on the degree of army-civilian’s integration, established the private enterprises and military enterprises’ complete information static game payoff matrix, dynamic game tree, complete information static game under the deep integration of army-civilian, and obtained the important factors effecting the cooperation of private enterprises and military enterprises by backward induction analysis; finally, concluded the private enterprises’ and military enterprises’ best decision options under the deep integration of army-civilian, then proposed the private enterprises’ and military enterprises’ related inspiration and advice in the field of weaponry research and production when facing competition and cooperation.