Here, we present a case of recurrent hepatocellular carcinoma(HCC)with portal thrombus that disappeared within only two months by oral tegafur(UFT-E). A 82-year-old man had recurrent multiple HCCs, which caused liver dysfunction because of diminished portal flow by the portal thrombus. Hepatic arterial chemo-embolization and continuous arterial CDDP-infusion chemotherapy did not show any efficacy. Next, oral UFT-E administration(low-dose, 300 mg/day)was begun, and after 1 month, PIVKA-II decreased and liver dysfunction was normalized. His complete response continued for 8 months until his death due to aspiration pneumonia and progressive dementia. Low-dose UFT-E administration may be considered a candidate in a case of HCC with no alternative treatment.