Introduction  Due to the differences in economic development， technological progress， management methods and other factors， the line loss management level of district and county-level power companies is uneven， and the line loss management level of district and county-level power companies directly affects provincial and municipal power line losses. Therefore， the establishment of a reasonable and sound district-level line loss management evaluation system is essential for the improvement of line loss management level of provincial and municipal power companies.

  Method  This paper firstly combined the line loss management impact index， established a sound line loss management index system for district and county power supply enterprises， and an improved analytic hierarchy process was proposed to improve the objectivity of the analytic hierarchy process calculation results， so that the evaluation was determined.

  Result  The weight of the system is more reasonable and correct. Finally， the statistical analysis method-factor analysis method is used to verify and analyze the evaluation system.

  Conclusion  The Line Loss Management Evaluation System which further explains the correctness and rationality of the system， and provides technical and practical reference for the provincial and municipal power companies to improve the management level of line loss.