After the introduction of DPC in 2003, cancer chemotherapy treatment was moved to our outpatient clinic. We have initiated an outpatient cancer chemotherapy center, and the chemotherapy regimens were developed for various kinds of cancer: 1 for esophageal, 7 for gastric, 9 for colon, 38 breast and 10 for hepato-biliary-pancreatic cancer. Since cancer chemotherapy on an outpatient basis is a world-wide trend, we should maintain the quality of cancer chemotherapy for inpatients in our outpatient center.