The ankle ligaments are usually in severe pain after a tear. The lateral collateral ligaments of the ankle are divided into the medial collateral ligament and the lateral collateral ligament, whose role is to maintain the stability of the ankle joint. The medial collateral ligament is the deltoid ligament, which is divided into two deep and shallow layers and is stronger and less prone to tearing. When the ankle is subjected to valgus or external rotation violence, the deltoid ligament can be torn from the starting point of the medial ankle or from the talar bone stop, and the clinical manifestation is severe swelling and pain at the medial ankle, and the pain is especially severe when the foot is valgus. The lateral collateral ligament is divided into the heel fibular ligament, anterior talofibular ligament and posterior talofibular ligament, which can cause injury to the lateral ankle ligament when the ankle joint is subjected to inversion violence, with clinical manifestations of rapid swelling and pain in the lateral ankle and increased pain in foot pronation. Whether the medial collateral ligament or the lateral collateral ligament is ruptured, the pain is more intense and should be repaired by early surgery.