Light beam orientation stability control simulation device and method

The invention discloses a light beam orientation stability control simulation device and a light beam orientation stability control simulation method. The device comprises a laser emitter, a polarizer, a bean expansion lens, a polarization beam splitter prism, a focusing image unit, an image sensor, a first reflector and a second reflector, wherein the polarizer is used for receiving light beams from the laser emitter; the polarization direction of the polarizer is horizontal direction; the beam expansion lens is used for receiving light beams from the polarizer; the focusing imaging unit is used for receiving a first direction light beam from the polarization beam splitter prism; the focusing imaging unit is positioned in a reflection direction of the polarization beam splitter prism; andthe second reflector is used for receiving light beams from the first reflector. By adopting the device, complete functions can be achieved, meanwhile angle deviation orientation stability control simulation and position dev