The results of surgical treatment in 100 patients with hepatolithiasis including the follow up study on 86 patients from 1985 to 1990 at Kyungpook National University Hospital is presented. The results were as follows. The relative incidence of intrahepatic stones during the period was 13.9% of the 719 cases of surgically treated gall stone disease. The peak incidence of age was 6th to 7th decades (51.0%) and the female was more commonly affected by the ratio of 1:1.7. The most effective means of diagnosis preoperatively were percutaneous transhepatic cholangiography and endoscopic retrograde cholangiography. We performed several types of operation for 100 patients depending on the general condition, the features ot bile duct and location of intrahepatic stones. Patients were treated by 4 different procedures, i.e., common duct exploration in 25 patients, biliary drainage procedure in 29 patients. hepatic resection in 31 patients and hepatic resection with biliary drainage procedure in 13 patients. There were no operative deaths. The stones were completely removed in 47.0% of the patients immediate postoperatively. Residual stones were often observed in the cases with stricture at the right and left intrahepatic ducts. On the follow up of 86 c.ases, 80.2%. were graded as good and fair. Partial hepatic resection was performed in 44 cases and we recommed it when there are unilateral multiple stenoses of intrahepatic ducts.