Abstract:Mountain overhead transmission line path changes, tower location and foundation type adjustment is an important factor affecting the construction progress and efficiency. The EPC project of overhead transmission line project with traditional working mode has the problems of low accuracy, long construction period and high cost. This paper takes the foundation construction of overhead transmission line project EPC project as the research object, and researches and develops the tower base visualization query platform of transmission line project EPC project based on the computing language and digital technology, which has the functions of tower position finding, three-dimensional visualization of tower foundation, real-time feedback of design and construction, and information management system, and realizes the goals of data linkage, analysis, processing integration and two-way dynamic management. The results are applied in an overhead transmission line project EPC project, and the average value of increased cost per tower due to foundation construction error is reduced 2 thousand yuan to 1 thousand yuan, achieving the goal of cost reduction and efficiency. The research results can fulfil the innovative development of power design and construction of overhead transmission lines, which is great engineering practical significance and reference value for the construction of intelligent and efficient new power system.