Sudden swelling of the foot can be treated in the following ways: First, the affected limb is continuously elevated for about a week, using the effect of gravity can cause the swelling to gradually subside. Second, rehabilitation training, active movement of the toes and ankle joints, and contraction of the calf and thigh muscles, using the role of muscle pump to accelerate blood circulation, so that the swelling symptoms significantly recede, usually need about 1-2 weeks. Third, treatment for the primary disease, if the swelling is a medical disease, such as heart failure, renal dysfunction, hypoproteinemia, and anemia, should be treated for the primary disease, improve the function of internal organs, restore the plasma colloid osmotic pressure, also can make the clinical symptoms of foot swelling gradually relieved, and treatment for the primary disease, the symptoms are not easy to recur.