Aiming at the problem that air to air missile laser fuse is easily interfered by cloud, smoke and ground sea clutter, a laser gray imaging fuze technology for air to air missile was proposed. The push broom linear array detection method was used, which was progressive scanning gray imaging with the intersection motion of missile and target according to amplitude information of laser echo. The progressive target recognition algorithm was used to deal with the gray outline image accumulated by line to realize the precise detection of laser fuze, so its anti-interference ability can be improved. The test results of the prototype show that the scheme of the laser gray imaging fuze technology is feasible, the hardware realizability is high, and the image data obtained from the test can provide technical reserve for anti-jamming research of laser fuze.