How to subside edema formation after surgical treatment, according to the specific causes of edema formation, clinically different treatment methods can be adopted: a. If edema is caused by local soft tissue trauma after surgery, it can be treated by external application of four yellow nectar, 50% magnesium sulfate solution, while strengthening anti-infection and rehydration support, and the edema can subside on its own after the local soft tissue damage is fully recovered, which can achieve better results. If the patient has edema due to malnutrition and hypoproteinemia after surgery, it is necessary to actively supplement human albumin, appropriately give furosemide to strengthen diuresis, and intravenous infusion of fatty milk amino acids and other drugs to supplement the energy needed by the patient can improve the edema caused by hypoproteinemia. Third, if the patient’s postoperative incision becomes infected and causes local edema, it is necessary to open the incision, remove the local necrotic tissue and strengthen the drug exchange treatment of the incision, and the edema can subside on its own after the local inflammation subsides.