The present invention discloses a high-voltage capacitive type voltage transformer routine test interconnecting box with method with no need for dismounting a lead, and relates to the field of the electric power and voltage transformer test technology. The interconnecting box comprises a box body and a main panel arranged at the upper surface of the box body, the device binding post of the main panel is connected with the insulation wire and a tested device, and the device binding post is connected with a tester through the testing line matching a testing tester itself. The alternative switch of the operation area of the main panel can switch the wire connection mode of the inner space in the box body to realize the purpose of completing two test modes with no need for dismounting the lead. The interconnecting box is convenient to carry, simple to operate and reliable and safe so as to reduce the number of times of workers' climbing and wiring so as to improve the effect of CVT routine test efficiency.