In this article a frequency adaptive selection method is proposed according to the communication peculiarity of the TDMA frequency hopping system. The disturbed frequency in communication environment will be confirmed by periodically statistic the operation reception of all frequency band, and the using frequency aggregate will be updated base on the operation reception, the hopping system accomplish the choosing and replacing frequency work in real time, and this method make the hopping system have some radio communication environment perception capability. The result of comparing experiment data analysis shows that this method can improve the data transmission quality, and enhance the anti-jamming capability effectively.