According to highprecision measurement needs, a hierarchical adjustment of automatic leveling device was developed. The automatic leveling device comprised a twolayer angle adjusting mechanism arranged up and down, each of which included a servo motor and the electronic level measuring the level deviation of the twoangle angle adjusting mechanism in the corresponding direction, and the measured value was fed back to the computer terminal.The computer terminal was connected to the upper and lower two servo motor,and the servo motor was driven by the feedback value. The leveling time is 1″, and the leveling time of the whole optoelectronic equipment is about 120 s.The experimental results show that compared with the conventional leveling system, the system shortens the preparation time of the photoelectric equipment and improves the leveling accuracy.