Wide applications of Information and Communication Technology ( ICT) drive the upgrading of service industries and a fusion of different industries，which lead to a blasting increase of modern service industries. In this process，platform service in the network environment is becoming a dominant pattern of modern service. The definition and features of platform service are explained． Through comparing platform service and platform economics，the paper pointed out that the impacts of ICT on service resource integration and on the behavior of service providers are major issues to be addressed in the platform service researches. Some key science problems are expected to be studied on improving the academic status of the research on service science in China to upgrade the core competence of Chinese modern service industries．