The new development and new application of IEC61850are analyzed.First，the profile of IEC61850is analyzed.Then the technical features of IEC61850Ed2.0are studied.Finally，the applications of IEC61850in different domains are treated including generation，transmission，transformation，distribution，dispatching and information security.For each domain，the standards and technical reports are given.IEC61850-90-1，IEC61850-90-2，IEC61850-90-3，IEC61850-90-4，IEC61850-90-5and IEC61850-90-7are analyzed.The application domain and technical features of each technical report are given with an overview of the unreleased technical report provided.This paper is helpful for the users to have an all-round understanding of the new development of IEC61850and correctly apply the IEC61850technical reports.