With the continuous improvement of the emission power of the laser emission system, the requirements for precise control of the emission direction of the high-energy laser beam are becoming higher and higher. The fast control mirror is a device that can quickly rotate the mirror to control the beam direction in real time. It achieves the purpose of controlling the emission direction of the laser beam by adjusting the angle of the mirror. It has the advantages of small size, compact structure, high speed, high precision and high bandwidth. It is widely used in astronomical telescopes, laser communication, image stabilization, compound axis precision tracking, aiming and other optical systems, and has become one of the key components for beam direction control in laser emission systems.