The purpose of our study is to investigate the antibiotic prophylaxis duration for cirrhotic patients with acute gastro-esophageal variceal bleeding. We will enroll those patients suffering from variceal bleeding documented by endoscopic examination and without apparent evidence of infection. Those who have received antibiotics within 2 weeks, are less than 18 years old, get pregnant, have malignancy other than HCC, have allergy to ceftrioxone are excluded. After receiving well explanation and giving consent, these patients are randomly allocated to 2 groups and receive prophylactic antibiotic just after endoscopic examination; Group I: receiving ceftriaxone 500 mg iv bolus stat and then q12h for 3 days, Group II: receiving ceftriaxone 500 mg iv bolus stat and then q12h for 7 days. They will receive appropriate endoscopic treatment for gastro-esophgeal varices and glypressin 1mg q6h for 3 days. They will start to feed on the 2nd day if not contraindicated. The 2nd endoscopic treatment for varices will be performed 2 weeks later. We record the demographic data, vital signs, transfusion amount; check hemogram, U/A, CXR, ascites routine (with apparent ascites), classification of variceal size and Child-Pugh classification. We monitor the events of rebleeding & infection, transfusion amount and hospitalization days We use rebleeding rate within 14 days as the primary end point. It is defined as the following events after initial stabilization of vital signs for 24 hours; (1): recurrence of hematemesis or bloody stool (2); need of transfusion more than 2 unit of blood and systolic pressure < 100 mmHg or pulse rate > 100/mn. We use infection rate during admission and mortality rate within 28 days as secondary end points.