There are many reasons that can lead to swelling of the ankle, the common ones include the following common factors: first of all, we should clarify whether the patient has experienced trauma, if the direct or indirect violence may lead to fracture and swelling, there may also be soft tissue swelling of the ankle due to ankle sprain. It can be treated by applying ice and elevating the affected limb, braking the affected limb not to walk freely on the ground, and also taking some oral Chinese medicine with blood circulation and blood stasis effect or using topical bruising drugs, and using non-steroidal anti-inflammatory drugs when the pain is severe. Secondly, it may be due to gouty arthritis, which may result in swelling above the ankle during acute attacks. The final cause may be heart failure or nephrotic syndrome, resulting in cardiogenic and nephrotic edema, which can be treated with diuretics, and patients with kidney disease should also pay attention to protein supplementation.