Diffuse reflection ceramic laser reflector cavity is mainly used for solid-state lasers. It uses non geometric optical reflection imaging to uniformly reflect pump light onto the laser working material, thereby maximizing energy transmission. The ceramic laser reflector cavity have important applications in laser processing, laser weapons, laser ranging, medical laser and other fields. The ceramic laser reflector cavity we have developed and produced has excellent characteristics such as good chemical stability, high diffuse reflectance, high mechanical strength, excellent insulation performance, good pump uniformity, and low thermal expansion.