It is very important for fuze and weapon to test all parameters of opticsmodule used in fuze of battle parts. The way of second ordermoments is studied,which is based on CCD and the way ofmechanical scanner. All the ways can acquire laser power density across the beam section. How to calculate all parameters of laser is studied based on ISO 11146 International Standard. At the same time, the transmittermodule’s key technology and arithmetic are analysed.