As the battle environment became more complex and the information technology developed, the multi-platform information fuse which is a key technology of the multi-platform cooperative detection already became a new trend. The situation information including target position, track quality is transmitted and shared by the data link, which provide the precondition and technical foundation for the multi-platform information fuse. An adaptive information fuse which based on the track quality is presented in this paper. The track correlation arithmetic which adopts the non-liner kalman filtering is modified and then a new technical method is provided for the multi-platform track correlation.