Transformer test wiring change-over switch

The invention relates to the field of power equipment, in particular to a transformer test wiring change-over switch which comprises a test correction module (300), the test correction module (300) comprises a multiplexer (310) and a plurality of compensation resistors (320) connected with the multiplexer (310), and the output end of the multiplexer (310) is connected with a measuring side lead terminal (120) in parallel; when the direct current resistance of the transformer is measured, the corresponding compensation resistor (320) is selected through the multiplexer (310) according to the grade and the capacity of the transformer and is connected to the measuring side lead terminal (120). According to the invention, the overall resistance is reduced by incorporating a large compensation resistor, so that the influence of contact resistance is reduced. According to the invention, the test accuracy can be improved. And meanwhile, wiring and switching can be facilitated, the labor intensity of climbing up and