This invention is one kind of posture automatic control angle automobile rear view mirror, the department mainly examines the automobile body high change with the vehicle, defers to the height difference to take the adjustment vehicle side rear view mirror's angle again, because the vehicles questions and so on carrying capacity, tire flat (automobile body reduces) reduces the vehicle side rear view mirror's field of vision scope, the scope which therefore this invention because of examines the automobile body to change highly, controls because the vehicle side rear view mirror compensation the automobile body to change highly creates the rearward vision which reduces, guaranteed that the driver rearward vision the scope, the vehicle speed change does not change because of Che Zihuo, effective safeguards traffic safety.