Ecological science is inseparable to resources development,environmental protection and economic development.It shows a series of new features.Ecological science presents a series of changes in aspects that conclude the research objects,the research methods,ideas,research depth and breadth and so on.Theory research is systematized,research object is complicated,methods become more colorful,limitation becomes long-term changed,scaling becomes diversified,objective becomes pragmatism,process becomes visualization and digitalzation,and the means become modeling and quantified.Along with the depth of scientific concept,ecological science will provide the theory supports and scientific methods for low carbon environmental protection,urban planning,cope with climate change and sustainable development.