The common clinical causes of easy edema in summer are mainly the following: a. In summer, due to the hot weather, when patients are replenished with a large amount of water, if there is difficulty in urine excretion, such as when the kidney function is inadequate, it will cause the symptoms of edema due to the accumulation of water in the body. Patients can actively improve kidney function and promote bladder contraction to excrete urine to reduce the water in the body, which can relieve the symptoms of swelling. Second, summer is the season when people eat more seafood such as crayfish and sea crab, these foods can cause allergic reactions in patients and swelling of the face and limbs. Patients are advised to stay away from allergens as soon as possible, take paracetamol orally and use anti-allergy drugs such as vitamin C and calcium gluconate intravenously to reduce allergic allergic reactions in the body and relieve edema symptoms. Once the skin is broken, the bacteria can enter the tissue gap and induce local infections, such as lower limb dermatitis and purulent dactylitis, which can cause edema in the body.