To meet with the demand of vigorous international competition that Chinese contractors participate and take promoting their competitive advantage as the end purpose, this paper puts forward dynamic double diamond theory which is selected by oversea markets of Chinese engineering corporation according with their characters and various related key factors of whole international engineering contractor market. It focuses on the interactive relation of the technical factors and other factors, and establishes 11 major types and 44 small types of index system according to the dynamic double diamond theory.