Based on introducing a calculation method for the limit of geometric detection range, the structure of vehicle-based photoelectric masts with a straight arm or a crank arm is presented. Photoelectric detection system in the application of vehicle mast can enhance the situation awareness ability of the system. The market demands of the vehicle-based optoelectronic mast are expected to increase with the growing maturity of its technology and continuous expansion of its application. The current status and application prospect of vehicle-based photoelectric mast technology at home and abroad are summarized.