Hepatocellular carcinoma (HCC) patients with main portal vein invasion have a poor prognosis associated with a median survival time of 2.7 months. Though many guidelines recommended sorafenib in HCC patients with macrovascular invasion (MVI), many clinicians or centers still select locoregional therapy (LRT) such as transarterial chemoembolization (TACE), radiation therapy (RT), or combination with LRT and sorafenib because the survival improvement by sorafenib only is expected to be shorter than that without MVI. However this multidisciplinary approach may increase treatment related toxicity such as liver failure etc. Stereotactic body radiation therapy (SBRT) is new technology providing very highly conformal ablative radiation dose for a small numbers (3-5 fractions) of large fraction size and is expected to new effective modality for HCC with MVI. Based on above suggestions, we herein offer our experience of a patient with perforation of radiation induced gastric ulcer after complete remission of tumor and main portal vein thrombosis by combination therapy of SBRT and sorafenib. Further study, maybe regarding a combination of locoregional and systemic therapy, is necessary on how to manage HCC patients with main portal vein invasion.