For fast scattering analysis of multiple objects, the compressive sensing (CS) theory is introduced into method of moments (MOM). With the application of biorthogonal lifting wavelet transform(BLWT), an undetermined linear equation model is constructed by extracting the only several important rows of sparse impedance matrix in wavelet domain, then the unknown induced current is reconstructed by orthogonal matching pursuit (OMP) technique. Numerical results are presented to show effectiveness and efficiency of the proposed method.