A full frequency points interference suppression method based on antenna array for data link communication system was proposed. The spatial interference suppression ability was added for data link communication system except for the original interference suppression ability in time domain and frequency domain. Firstly, the covariance matrix is estimated using the sampling data in the non-valid pulse period in a frequency hopping period. Then the anti-jamming weight vector is calculated by power inversion criterion. Finally, the received signals are weighted to achieve the purpose of suppression the jamming signals only. The correctness and effectiveness of the proposed method are verified by computer simulation.