For active activities in patients after nerve displacement such as cervical 7 nerve root displacement on the healthy side, it is necessary to pay attention to the activity of the affected limb with both eyes in order to facilitate the re-establishment of brain function through the visual reflex. In addition, it is important not to exert force on joints other than those that need to be restored at the same time to avoid adverse effects on the reconstruction of brain function. This method is applicable to all postoperative patients with cervical 7 displacement on the healthy side, and the displacement to the musculocutaneous nerve and median nerve is used here as an example. 1. Restore the flexion of the elbow by displacement to the musculocutaneous nerve on the healthy side. The healthy limb (left) is forced to do shoulder inversion (pinch), while the elbow joint of the affected limb (right) is held up with the assistance of another person, and the eyes are focused on the affected limb. Imagine in the brain that the affected limb flexes the elbow and completes this action with force, or if it cannot be completed, it is done passively with the help of others. 2. Move the C7 on the healthy side to the median nerve to resume the flexion of the wrist. The healthy limb (left) does the shoulder inward movement (pinch) with force, while the wrist joint of the affected limb (right) is held up with the assistance of others, and both eyes look at the affected limb. The brain imagines that the affected limb flexes the wrist and fingers and completes this action with force, if it cannot be completed, then others will help passively complete Second, the healthy limb pushing wall training method: (stretching) This method is also applicable to all patients with healthy cervical 7 displacement after surgery, here is an example of displacement to the radial nerve. 1. Resume elbow extension with the healthy side C7 displacement to the radial nerve The healthy limb (right) pushes the wall with force, while the elbow joint of the affected limb (left) is held up with the assistance of others, and both eyes look at the affected limb. Imagine in the brain that the affected limb extends the elbow and completes this action with force, if it cannot be completed, others will help to passively complete the action. 2. C7 displacement on the healthy side to the radial nerve to restore wrist and finger extension The healthy limb (right) does shoulder inward movement (pinch) with force, at the same time, the affected limb (left) wrist joint is held up by others with the assistance of the affected limb, and both eyes look at the affected limb. Imagine in the brain that the affected limb extends the finger and completes this action with force, or if it cannot be completed, the action is completed passively with the help of others.