Purpose : Lipiodol CT is a important modality for the diagnosis of hepatocellular carcinoma and compared is usually performs at 2-3 week after Lipiodol injection. Therefore, we assessed and the diagnostic value and meritsof immediate CT after chemoembolization from there of 2-3 week delayed Lipiodol CT. Materials and Methods : Thirty three cases of chemoembolization which were performed both immediate CT after chemoembolization and 2-3 week delayed Lipiodol CT were reviewed retrospectively. They were divided into the four grades according to pattern of lipiodol uptake by three radiologists. the diagnostic value of immediate Lipiodol CT was compared to delayed Lipiodol CT. Results : Grade 0 was two cases(3.0%) and Grade 1 was seven cases(21.2%). In the cases of Grade2(23/33, 69.7%), tumor uptake could be dishng wished from parenchymal uptake of Lipiodol by its density and pattern. Tumor uptake showed dense and homogeneous pattern, but parenchymal uptake revealed less dense and hepatogram-like wedge shaped pattern. Lipiodol uptake of tumor in Grade 3(1/24, 3.0%) was equal to that in delayed Lipiodol CT. Grade 3 and 2(72.7%) of the immediate Lipiodol CT were not inferior to delayed Lipiodol CT in its diagnostic value. Conclusion : The immediate Lipiodol CT could make rapid establishment of treatment plan and are expected to be more convinient than delayed CT for the patients.