Introduction  At present， the low to medium voltage distribution network projects have the characteristics of large number and scattered locations. In the actual management， there are problems such as simple and extensive cost management， mismatch and inconsistent costs and standards， which restrict the standardization and refinement of projects management， and the applicability of existing standards and costs need to be further improved and optimized.

  Method  Therefore， Hainan Power Grid carried out a study on the construction cost of low to medium voltage distribution network based on lean management. As the basis of this research， this paper made a comparative analysis of the standards for low to medium voltage distribution networks for the first time， including planning and design standards.This paper selected Guangdong Power Grid with good construction efficiency as the benchmark， analyzed the differences between Hainan and Guangdong Power Grid standards.

  Result  This paper evaluates the applicability of Hainan's medium and low voltage distribution network standard.

  Conclusion  This work are helpful to improve the rationality of planning standards， the adaptability and refinement of design standards for the Hainan Power Grid low to medium voltage distribution network， which comprehensively improves the construction level of the distribution network of Hainan Power Grid.