Ａ method of bearing fault detection based on bicepstrum technique is presented in this work. This new method combines bispectrum technique with cepstrum analysis. Firstly, in order to eliminate the noise effects, the bispe ctrum is calculated. Then the bispectrum is processed by bicepstrum techniqu e. Experimental results show that the method presented in the paper can effectiv ely diagnosis the faults of rolling bearings.