Abstract: Using E-G Index, this paper measured the agglomeration level of E＆C industry in time, space and internal industrious structure. This paper presents: From 2005 to 2012, E＆C industry shows obvious concentration nationwide. In internal industry, upstream industries strongly agglomerated while this phenomenon didn’t exist in middle and downstream industries. The agglomeration showed a slowly increase from 2005 to 2012 as a whole; however it appeared variously in structure and districts. Spatially, in western area, the upstream of E＆C industry existed a strong agglomeration, and parts of the industries concentrated respectively in eastern, central and northeastern regions without a regular pattern yet. According to our research, some policy advises are given concerning the optimization and promotion of E＆C industry, to quicken the transitional development in resource cities and areas.