This equipment trains the push and pull movement of the upper limbs on the vertical plane, and strengthens the muscle chains of the active and antagonistic muscles at the same time. On the premise of ensuring the safety of patients, carry out efficient training; The two-way hydraulic resistance can start from the lowest limit set, with small inertia, so as to avoid damage to patients during use; Comfortable use experience. Special design is adopted for the stressed parts of joints, which conforms to the principle of human morphology.