Tower as an important part of transmission line project construction, in the overall project construction cost accounts for more than 30%, to ensure the quality of project construction, improve the level of structural optimization, has a positive impact on the stable operation of the power system. Therefore, while gradually expanding the scope of electric power investment and construction, China has strengthened the research on the structure optimization design of transmission line tower body, effectively controlled the project cost and improved the quality of construction and installation in the comparative analysis. Based on the understanding of transmission line pole tower design theory, according to the current common foundation selection and specific requirements, this paper deeply explores the transmission line steel pole tower body operation platform, and carries on the verification analysis to the practice optimization design scheme. The final results show that the optimized design of the tower structure can better ensure the stability and security of power grid system construction and operation.