Abstract:With development of solid state laser weapon technology, and according to the incoherent combing laser actionmechanism which was addition of laser energy, the infection ingredient such as laser diffraction, beam quality, atmosphericturbulence, tracking and aiming error etc., were synthesized into the spreading of far field spot. The index of sub-calibersystem was simulated and analyzed, and the index of solid state laser weapon system such as laser power, combinationnumber, system beam director size, beam quality, tracking and aiming error etc., were analyzed synthetically, and the sys.tem optional index scheme was presented.