A 55 year-old woman who had hepatic segmentectomy and diaphragmatic resection due to hepatocellular carcinoma invading the diaphragm was found to have a solitary pulmonary metastasis in the left lower lobe and bony metastases to the thoracic spines and pelvic bone. Radiofrequency ablation was performed to ablate the pulmonary metastatic nodule measuring 1.5 cm in diameter, while radiation therapy was performed to the bony metastases. Pulmonary metastatic nodule disappeared 10 months after radiofrequency ablation. Therefore, we report a case of solitary pulmonary metastasis of hepatocellular carcinoma that was successfully treated with radiofrequency ablation.