Aiming at the problem of intelligentization of artillery command information system, this paper puts forward an auxiliary decision-making method to improve the intelligentization of command information system. Based on the artillery task chain technology of information system, this paper analyzes the command order of the existing command information system, and introduces the general idea, process design and key technology application. The results show that the technology can improve the level of intelligent assistant decision-making of the existing command information system to a certain extent, and provide ideas and experience support for the development of intelligent command system.