The invention discloses an elderly people limb functional rehabilitation training device. One end of a linear guiding rail of a synchronous linear mechanism is connected with a fixed connecting seat,the fixed connecting seat is provided with an installing hook, a hanging rod is clamped in the installing hook, the hanging rod is fixed to one end of a safety supporting frame, the other end of the safety supporting frame is connected with a seat, the hanging rod is clamped in the installing hook to allow the seat and the synchronous linear mechanism to be detachable, the other end of the linearguiding rail of the synchronous linear mechanism is fixedly connected with a power mechanism, the lower portion of the other end of the linear guiding rail is provided with a guiding wheel, an emergency stopping switch is fixed to the other end of the linear guiding rail, and the training mechanism is arranged on a loading platform of the synchronous linear mechanism. The device has the advantagesof smooth operation, low noise, high driving power, simple structure, low cost, convenient moving, safety and reliability, and secondary damage on a rehabilitation trainee is prevented.