Harmonic wave is a special interference in vibroseis acquisition, and suppressing harmonic interference is an important task in vibroseis data processing. After research, the authors proposed force signal replacing theoretical sweeping signal and deconvolution algorithm replacing traditional correlating method to complete the deconvolution of vibrating record. The direct data of the method is convolution record. Compared to the correlation method of vibroseis, the harmonic interference is attenuated, and the SNR is largely improved.