The invention discloses a detachable long bone reduction robot. The detachable long bone reduction robot comprises a fixing mechanism and a reduction mechanism which are connected with or separated from each other, wherein the fixing mechanism comprises two groups of same fixing units which are connected with or separated from each other via two same connecting plates (1); the reduction mechanism is provided with a small annular platform (11), a large annular platform (12), twelve universal hinges (13) and six driving rods (14); the small annular platform (11) is connected with a bottom plate (2) and the universal hinges (13); the universal hinges (13) are connected with the driving rods (14); the universal hinges (13) are connected with the large annular platform (12); the large annular platform (12) is connected with the bottom plate (2). Due to the adoption of a parallel mechanism of six degrees of freedom, the detachable long bone reduction robot has the advantages of high accuracy, high loading capacity, high rigidity, compact structure and the like; the detachable long bone reduction robot is applied to long bone fracture reduction, is used for replacing doctor operation, and contributes to increasing the reduction accuracy, reducing operation wounds and lowering the probability of operative infection.