Jamming and sticking is the major factors cause the failure of space mechanisms. More advanced solid lubri cating technologies have to be developed to satisfy the requirements of higher reliability, longer life, higher degree of accuracy, larger torque enduring ability, smaller cubic content, and lighter weight of space mechanisms in the future. This article reviewed the peculiarity of space environment and refers to the failure case of Galileo spacecraft. Challenges the future missions facing were introduced by some missions of ESA (European Space Agency). Relating the progresses of solid lubricating technology the conclusion is get that: the Nanocomposite and nanostructured coatings of multilayer will be the first choice of solid lubricating in space mechanisms; Various processing method should be used assorted in an optimal way; the lubricating design and mechanisms design should be integrated.