Rehabilitation training for proximal humerus fractures should preferably be 30-60 minutes at a time. Most patients with proximal humerus fractures are elderly and have severe osteoporosis, and the use of local fixation is usually relatively stable, but not absolutely stable. Therefore, each rehab session should be strictly limited to 30-60 minutes to allow for the gradual recovery of local function and the gradual increase in muscle strength, while avoiding excessive activity that may result in loosening of the internal fixation or displacement of the fracture. The patient’s muscle strength cannot tolerate prolonged rehabilitation, and if the duration is too long, it can cause severe swelling and pain in the shoulder joint, making it impossible for the patient to perform normal rehabilitation training the next day. Intermittent cold compresses should be applied after rehabilitation for 30 minutes each time, and the number of cold compresses can be increased according to the swelling.