The utility model discloses a transformer is measured intelligence and is cut wire changing device, including two or the identical switch unit of three structure, the input of these switch units partrespectively with the high -pressure side of transformer, the high -pressure side of low tension side or transformer, the middling pressure side, three -phase winding in the low tension side and the utmost point post winding in the neutral point are qualified for the next round of competitions, bushing tap goes out the line connection, the equal and high -pressure part bus connection of high voltage measurement line bus interface in these switch units, equal and the low -pressure section bus connection of line bus interface is measured to low pressure, these switch units are according to switching the instruction according to required mode of connection, high -pressure side with the transformer, the middling pressure side, an in the low tension side, B, utmost point post winding among C three -phase winding and the neutral point O is qualified for the next round of competitions, bushing tap is qualified for the next round of competitions and switches respectively to high -pressure partbus and the low -pressure section bus in. The utility model provides a different measuring points are measured among the prior art needs artifical participation line changing and different measuringitems to need artifical problem of participating in trading equipment and line changing.