Based on the introduction of the Swerling target model, this paper studies the detection performance of the network cooperative radar for Swerling fluctuating targets. The detection performance of a single station radar for the Swerling fluctuation target is analyzed, and then it is extended to the detection of the Swerling fluctuation target by the network cooperative radar. The simulation results of the performance of the network cooperative radar for a single fluctuating target are given, which provides a theoretical basis for the research of the target fluctuation and the design of the network cooperative radar system.