Abstract: The qualification rate of line loss collection in low-voltage substation area is an important economic and technical indicator of power supply enterprises, and also an important indicator to measure the comprehensive management level of enterprises. After field investigation, the team found that the success rate of electricity meter collection was low, which was the crux of affecting the qualification rate of line loss collection in low-voltage substation area. Find out 5 end factors through the association diagram and confirm them one by one. In view of the fact that the electric energy meter has no frozen number, the method of defect elimination patrol inspection is formulated to ensure the power supply at point 0; For mixed module installation, improve the module replacement process to ensure that the module types in the same substation area are consistent; For the interference of high frequency signal, the method of shielding high frequency signal to strengthen self communication signal is adopted. Check the effect after the implementation of the countermeasures. The success rate of energy meter collection has increased from 78% to 99%. The problem of low collection success rate of electric energy meter is solved.