It is normal that some patients with external ankle fractures do not feel pain. Whether or not they feel pain is related to the severity of the fracture, whether or not the fracture is displaced and whether or not they have received timely and appropriate treatment. If the external ankle fracture is light, there is no obvious displacement, just a simple external ankle fracture, there is no other combined injury, or an avulsion fracture of the external ankle, although there is local swelling and pain, but if the treatment is timely, it will soon be relieved, or some patients with avulsion fracture do not feel pain at all. If the external ankle is simply fractured, there is no obvious displacement, and after timely external fixation and braking of the cast, even if there is pain at the beginning, the pain will be relieved in a week or so after symptomatic treatment. The pain caused by the fracture of the external ankle is mainly due to the irritation of the local tissues such as the periosteum. In addition, there is soft tissue damage after the fracture, resulting in bruising and edema, which causes pain at the fracture site. However, if the injury to the outer ankle is not serious, the periosteum and other tissues are not irritated, and the outer ankle does not cause significant swelling, the patient will not feel pain in this case.