Abstract: The development of big data technology has improved the management level of project cost data, and promoted the innovation and development of project cost consulting information construction. How to give full play to the role of big data in the field of engineering cost has gradually attracted scholars' attention. This paper analyzes the impact of big data on engineering cost consulting from the perspectives of design plan integration and construction cost control; discovers the problems of inconsistent data standards and difficulty in information sharing in the construction of engineering cost informatization; and proposes the strategy of engineering cost construction in a big data environment; aims to improve the ability of cost consulting companies and practitioners to use big data technology to solve cost evaluation problems.

Key words: Big data, Cost consultation, Information construction