Abstract: In order to further improve the construction quality of power transmission and distribution projects, the transformer equipment in power transmission and distribution projects is analyzed.This paper introduces the key points for attention in transformer installation and makes preparations in the early stage of installation.The debuging parameters and methods of transformer are discussed.This paper introduces three debuging methods: power transmission debugging, half load debugging and full load debugging.Check whether the transformer has faults after debuging to ensure stable operation of the transformer.