Four pieces of reflection volume phase gratings are selected,and then divided into two groups,in which the fringes are orthogonal to each other. The planes of grating′s vector of each group are perpendicular to each other. As a result,a two-dimensional low-pass spatial filtering for continuous-wave (CW) laser beam is achieved. Based on Kogelnik′s coupled-wave theory,the performances of that configuration of filtering for CW laser beam are analyzed,and the filtering characteristics of the configuration for deformed Gaussian laser beam are simulated. The results show that the components with high angular frequency of the input laser beam have lower diffraction efficiency,while those with low angular frequency have higher diffraction efficiency up to 98% in this configuration. The high angular frequency can be filtered out from the laser beams without focusing. The spatial intensity distribution of filtered laser beam is similar to that of undeformed one.