This study aimed to clarify support systems currently in place to provide information, consultation, and communication support, as well as the space planning for the provision of such support, in designated cancer hospitals in Japan. The following three aspects were examined. 1.Data on all 397 designated cancer hospitals of Japan were collected from the website of the Center for Cancer Control and Information Services. 2.Data from 140 cancer salons run by 25 prefectural and city governments were collected by a telephone survey. 3.Interviews with 5 designated cancer hospitals were conducted to clarify in detail the support systems in place for information, consultation, and communication support, as well as space planning for their provision.