160 patients, 128 males, 32 females, with portal hypertension were admitted into our department for sclerotherapy from May 1987 to August 1990. Gastric fundus could be observed clearly in 145 of these patients who were examined with endoscope. Gastric varices were found in 105 of the 145 patients. Sclerotherapy of gastric varices were carried out in 47 of the 105 patients by intravenous injection with the method of lesser injection points and larger dosage. The results showed that a satisfactory effect was obtained with a rate of immediate stoppage of bleeding by 95.7%; and a rate of disappearance of gastric varices by 95.3%. The rate of recurrent bleeding was 7.9%. In addition, the occurrence rate, the severity, the manifestations under endoscopy and the classification of gastric varices as well as the indication, and complications of sclerotherapy of gastric varices were discussed in detail.