The method to determine if a patient has leg swelling is actually quite simple: pressure at the anterior tibial location is sufficient, and if indentation is present, the patient is highly considered to have leg swelling. To further clarify the cause of leg swelling, it is recommended to check the arteriovenous ultrasound of both lower extremities. In addition, liver function, kidney function, blood count and BNP should be further checked to determine whether the leg swelling is due to renal failure or cirrhosis, heart failure, etc. It is also possible that the patient has leg swelling due to nephrotic syndrome or hypoalbuminemia, which can also cause leg swelling. If the leg swelling is caused by heart failure, it is recommended that the leg swelling can be improved by a combination of static furosemide. If it is caused by hypoalbuminemia, it is necessary to enhance nutrition and, if necessary, to supplement albumin.