Abstract: The integration technology is critical to the reliability of space mechanisms. With the emergence of the large-scale deployable support truss, the large-scale flexible solar array, the long life servo mechanism with good performance, the large space manipulator and space intelligent probe, the space mechanism integration technology faces new challenges and becomes a key issue in the development of space technology. This paper reviews the present state and the potential development of the space mechanism integration technology, and proposes the future development direction.