Swelling of the dorsum of the foot may be caused by vascular diseases, such as deep vein thrombosis and phlebitis in the lower extremities, which can lead to swelling of the dorsum of the foot. 2, it may be caused by some medical diseases, such as cardiogenic diseases, kidney diseases, and metabolic diseases, which can lead to swelling of the dorsum of the foot. 3, orthopedic diseases, such as osteomyelitis, bone tumors, and fractures of the ankle joint, which can lead to swelling of the dorsum of the foot, 4.It may be due to injury or infection of the soft tissues on the back of the foot, resulting in swelling of the back of the foot. If the above symptoms occur, the patient should rest in bed, elevate the affected limb, avoid weight-bearing on the affected limb, and give appropriate topical anti-inflammatory and analgesic drugs. If the symptoms are not relieved within a short period of time, it is important to go to a regular hospital in a timely manner, to improve the necessary auxiliary examinations, and to give reasonable treatment methods, so as not to delay the condition.