The main cause of muscle atrophy after thumb and finger ligament contusion is atrophy due to long-term braking, and the treatment mainly includes rehabilitation training and physical therapy. 1. Rehabilitation training: In the acute stage of contusion, rehabilitation training mainly focuses on passive training, using a healthy hand or support to do extension and flexion of each finger to delay muscle fibrosis; in the recovery stage, it mainly focuses on active training of the hand, such as extension and flexion of the thumb, inward retraction and adduction of the thumb, to promote the thickening of the muscle fibers, and gradually restore the muscle strength and endurance. 2. Physiotherapy: Physiotherapy can be used as an auxiliary treatment for rehabilitation training, mainly including heat therapy, massage, low-frequency or medium-frequency electrical stimulation, etc. The main purpose is to accelerate the blood flow around the muscles, promote the discharge of acidic metabolites, and passively cause the contraction of muscle fibers to promote the recovery of muscle tissue. The same disease, the patient’s physical condition is different, different stages of the disease, the treatment method is different, should be standardized treatment under the guidance of the doctor.