A pulsed multiple-frequency Nd∶YAG laser of wavelength 532 nm,repeated frequency of 1 Hz and 5 mm of laser beam diameter was used in the experiment.A ground glass-phase plates or spackle-phase shifter was used in a low-order mode or high-order mode laser optical path,measured the homogenization of laser spot energy at various distance and analyzed the characteristic of the two methods.The effects of two methods are obvious，there was extremely significant differences between ground glass-phase plates group and non-homogenization group (P＜0.01)，and there was statistical difference between speckle-phase shifter group and non-homogenization group (P＜0.05).Homogenization effect of ground glass-phase plates group was more remarkable,but energy attenuation of it was more clearly.The study proved that ground glass-phase plates can be used in the near-field of strict symmetrical energy.Speckle-phase shifter should be used in the far-field.