The invention relates to an upper limb joint functional evaluation rehabilitation training system and an evaluation method. The system comprises a training host and a matched upper limb joint trainingdevice; the training hoist comprises a training machine head and a control system which are installed on a machine body; the training machine head comprises a machine shell, and a motor, an encoder,a coupler, a torque sensor, a drive wheel, a driven wheel, a driven shaft, an angle sensor and a quick union output shaft are arranged inside the machine shell; the motor, the encoder, the coupler, the torque sensor and the angle sensor are all electrically connected with a control system. The system is mainly applied to patient suffering upper limb dysfunction caused by cerebrovascular disease, severe external injury or other nervous system diseases and patients needing to recover upper limb functions after operations, and has functions of motivating muscle remaining power and recovering joint coordinate ability and joint flexibility and the like.