Abstract: One of the core tasks of construction enterprise information system is integration and sharing basic information. On the basis of information classification and coding is the basic work of enterprise informatization. Information classification and coding are two interrelated work. Construction enterprise basic information classification and coding is regard the construction enterprise basic information as the research object, so as to study the scientific classification and practical coding, for enterprise information integration support. In this paper, in view of the construction enterprise management features and data resources, in reference to domestic and foreign data classification and coding standard, the general design requirements, basic theory and method of the construction enterprise basic information classification and coding are proposed, and presents a design case of construction enterprises basic information classification and coding.