Leg swelling is one of the clinical manifestations of hepatic ascites, and leg swelling is closely related to increased portal vein pressure, hypoproteinemia, excessive lymphatic fluid, and blood volume insufficiency caused by hepatic ascites. 1. Increased portal vein pressure due to hepatic ascites: with increased portal vein pressure, absorption of tissue fluid will be reduced, ascites will appear in the abdominal cavity, and edema will appear in the lower limbs. 2. Hypoproteinemia due to hepatic ascites: when albumin is too low, it will lead to a decrease in the osmotic pressure of plasma colloids, which will lead to the extravasation of blood components leading to leg swelling. 3. Excessive lymphatic fluid due to hepatic ascites: When too much lymphatic fluid is produced and the chest tube cannot drain all of it, it will lead to the leakage of lymphatic fluid, resulting in leg swelling. 4. Insufficient blood volume due to hepatic ascites: it will lead to the decrease of renal blood flow, sodium excretion and urine output, which can cause leg swelling. There are other causes of swollen legs in liver ascites, it is recommended to go to the hospital in time, improve the examination to clarify the cause of the disease, and then give targeted treatment or therapy.