Aiming at the firepower planning problem of cross platform resource cooperative sharing, under the constraints of time, space, weapon resources and target threat degree of existing fire interception, this paper innovatively proposes a firepower resource planning method with sensor information constraint, and establishes a closed-loop firepower resource planning mechanism based on sensor weapon and target information feedback. The improved optimization model function of firepower resource dynamic planning is constructed, and the design idea, composition framework and model algorithm are described in detail. The simulation results show that it can accurately optimize the target strike batch, and improve the effectiveness and rationality of firepower resource dynamic planning for multi-platform cooperative engagement.