In order to meet the needs of the future war, combined with the current situation of military equipment development, the cooperative application adapter of heterogeneous air defense weapon system is designed and realized by using the JSON transmission format, which has become the mainstream because of its simplicity and high efficiency in recent years, at the same time, the JSON structure and the data characteristics of air defense weapon system are combined to optimize the transmission. The experimental results show that the application adapter can meet the data transmission requirements and operational performance index of heterogeneous air defense platform and node dynamic network under the corresponding network load and transmission strategy, it can be used for reference in information cooperation and interaction of military, ship, aerospace and other strong real-time heterogeneous systems.