Muscle atrophy after thigh fracture can be exercised by the following methods: First, muscle atrophy in the early stage after thigh fracture is fixed can be trained by muscle static contraction and diastole. Static contraction means not to move the adjacent joints, but only to make the muscle contraction and diastole. Second, six weeks after the thigh fracture, the fracture end has been stabilized, at this time, resistance training can be carried out, usually using sandbags or elastic bands for resistance training, gradually increasing the intensity of muscle training, so that muscle atrophy can be recovered in the short term. After the above comprehensive training, the patient’s leg muscles will gradually recover to the pre-injury level in 3-6 months. However, the patient should not interrupt the training and insist on training for one year to restore the muscles to normal and also to promote the smooth healing of the fracture and the smooth recovery of the bone strength at the fracture site.