Bones can be softened by the following methods: First, stretching joints: patients should often stretch the joints before activities, so that the range of joint activities gradually increase, but also improve the limb muscle tension, stiffness, and ultimately make the bone joints soft. Second, more exercise: aerobic training can be carried out, such as swimming, rope skipping, aerobics, etc., through this kind of training, the flexibility of the bone joints can be improved, and the patient is able to complete the movements that can not be completed normally. After the above methods, the bones will become softer, the range of motion of the joints will increase, and the patient will be able to complete the dance and other movements.