Aiming at the concurrent development management mode based on integrated product team (IPT) group, this paper analyzes how to balance the task and cost in the development process. In the process of equipment system development, the principle of associated task decomposition is formulated, the task decomposition model is established, and the task and cost resources are optimally allocated among different IPTs. The results show that the study can improve the cost-effectiveness ratio and management level of equipment system development.