Abstract: At present, for the preventive test of power equipment, we test the power equipment according to the test items specified in the maintenance test procedure. The procedure only stipulates the test items, and the order of most of the test items is not specified. Different test personnel have different order of the test items for the subjects, and the work efficiency is also different. This paper optimizes the sequence of high voltage electrical preventive test items of electric power equipment, and forms a curing scheme to improve the pre-test efficiency of electric power equipment.