Abstract: The method of automatic collimation of multispectral and multibeam axes—infrared,TV and lase axes is introduced in this paper. It's pointed out that in the design of a weapon system, a collimating prism box should be installed behind the electro-optical instrument, if the condition is permitted, to control the electro-reticule generator or other functional elements added in the circuit, and make the weapon system realize the automatic collimation during flighting or driving.