To improve the efficiency of networked radar interferencean improved genetic algorithm was designed and applied to interference resource allocation.As to the three allocation models (one-by-onemore-by-lessand less-by-more)the allocation plans were made and the interference benefit value was calculated respectively.Compared with the results of other algorithmsthe improved genetic algorithm not only gets better allocation results and benefit valuebut also needs fewer iterative timeswhich verify the high efficiency of this algorithm.