Abstract: In order to solve the present problems of low informatization level,weak supervision,control and evaluation means of safe production management and control in electric power maintenance site,an improvement method based on "online maintenance QR code" "task card" and "maintenance test manual" is proposed,which helps to realize paperless field work,handheld submission of safety technology,normalization and standardization of maintenance process.And it has been applied in actual production at present and remarkable results have been achieved.