A muscle crush injury occurs when a muscle is compressed, causing swelling or nerve damage. Once a crush injury occurs, it is important to first remove the crushing factor as soon as possible, such as in the case of a car accident, and move away from the scene of the accident as soon as possible. If the crush injury has caused localized swelling of the muscle or skin, pain, and a purplish color, cold water ice packs should be applied immediately to reduce bleeding or alleviate pain. Also, actively observe the patient for signs of shock and call an ambulance for emergency care. At the same time, the patient’s limbs to reduce the activities, so as to avoid causing fractures or unnecessary friction damage.