Medical robots were introduced that combining the mechanical technology, sensor technology, image technology, modern information processing technology and medical technology.Its development history and present application conditions were reviewed in the field of assisted surgery, rehabilitation and hospital services, and etc. By taking the “Da Vinci” operation robot as an example, the main composition and medical technology advantages were analyzed, at the same time, several defects of the medical technology of current robot were listed. Finally the development prospects of the medical robots are looked forward.