Abstract:At the background of the Internet of things, cloud computing, social networks, and the wide use of various sensors, unstructured data is characterized by some features such as large numbers, many kinds, strong timeliness, prominence of importance and so on. The focus of current research is how to obtain, analyze , deal with and apply these data. Based on the large data application technology and the energy, economy ,environment coordinated development theory, by merging two thinking models of the big data and the energy, economy ,environment trinity, this paper proposes the architecture pattern and operation model of the energy, economy ,environment (3E) large data platform. At the background of big data , it also analyzes the complex system of energy, economy and environment, mines association rules hidden behind big data and makes the irregular and scattered data into the government, enterprises, research institutions and other organizations of the information resources, which provide them with data support ,support tools and methodology support research platform.