We report three successful cases with irinotecan (CPT-11 60 mg/m2) + cisplatin (CDDP 30mg/m2) chemotherapy (once in 2 weeks) where S-1 failed to respond to recurrent gastric cancer. Case 1: A total gastrectomy and splenectomy were performed for a cardiac gastric cancer (T3, N2, H0, P0, CY0, por 1, Stage IIIB). An abdominal CT revealed paraortic lymph node metastases 4 months after the surgery. No reductions were noted after S-1 monotherapy. We next treated this patient with CPT-11 + CDDP. An abdominal CT revealed a CRin after 11 courses. Case 2: A total gastrectomy, splenectomy and cholecystectomy were performed for a cardiac gastric cancer (T3, N3, H0, P0, CY1, tub1, Stage IV). After the surgery, we treated this patient with S-1 mono-therapy. However, we finished this treatment for abdominal recurrence. We next treated this patient with CPT-11 + CDDP. An abdominal CT revealed a CR after 24 courses. Case 3: A distal gastrectomy and cholecystectomy were performed for a pyloric gastric cancer (T2, N1, H0, P0, CY0, tub 2, Stage II). An abdominal CT revealed paraortic lymph node metastases 10 months after the surgery. We treated this patient with S-1 + paclitaxel (PTX) chemotherapy. No reductions were noted after 2 courses. We next treated this patient with CPT-11 + CDDP. An abdominal CT revealed a CR after 8 courses.