With the continuous development of display technology,the advantages of laser display have been gradually reflected with the in depth research on laser technology.The laser as a light source has excellent monochromatic properties and a very narrow spectral line width which makes the laser imaging highly saturated,displaying a larger number of colors,a wider color gamut than traditional light sources and an advantage in terms of picture brightness.However,laser scatter due to the high coherence of the laser beam can reduce the quality of the image.Therefore,the study of laser scatter and scatter suppression is a major focus of research in the field of laser displays.In this paper,a laser projection lighting system that uses simple optics,takes up little space and is well suited to the design and use of projectors and maintains good light efficiency.In this system,a compound scatter suppression scheme is designed to address the causes of laser scatter.This scatter suppression method can reduce the scatter contrast of white field from 0.132 to 0.042 below the recognition limit of human eyes.