A 38-year-old man with complaints of nausea, epigastralgia, cough, and decrease body weight was given a diagnosis of advanced gastric cancer (type 4) with carcinomatous lymphangitis of the lung (UM-circ cT3, N3, H0, P0, M1, stage IV, por2). He was treated with combination of docetaxel (DOC) 40 mg/m(2)/day (days 1, 15) and S-1 orally 80 mg/m(2)/day (days 1-7, 15-21), 1 week administered 1 week rest. After 2 courses of treatment, the patient achieved a partial response in the carcinomatous lymphangitis of the lung. Tumor markers decreased and symptoms improved. He experienced grade 2 peripheral neuropathy but with no grade 3 adverse events. Although the prognosis of gastric cancer with carcinomatous lymphangitis is poor. These results indicate that bi-weekly DOC and S-1 combination chemotherapy might be effective for gastric cancer with carcinomatous lymphangitis of the lung.