The common clinical causes of swollen feet in summer are generally the following: a. Patients with cirrhosis loss of compensation will have swollen feet due to a significant decrease in albumin index in the body, which will cause a large amount of water to seep into the tissue interstices. Due to the hot weather in summer, patients consume more water, which will aggravate the symptoms of swollen feet. The swelling of the feet can be reduced by the patient supplementing albumin, strengthening diuresis and reducing water intake. Secondly, for patients with varicose veins in lower limbs, hot weather in summer can cause expansion of peripheral blood vessels and more blood pooling in lower limbs, thus causing swollen feet. If the patient has mild symptoms of swollen feet, sclerosing agent can be injected into the blood vessels via blood vessels to promote self-occlusion. For patients with more serious varicose veins, surgery is needed to remove the varicose vessels to completely cure the symptoms of swollen feet.