The invention discloses a mechanical-electrical integrated device of a tapping switch. The mechanical-electrical integrated device comprises an outer insulating ring, installation bases, a tapping switch body, and an installation plate, wherein a rectangular slot is formed in the middle part of the installation plate; multiple installation bases are arranged on the rectangular slot; the tapping switch body is installed on the middle installation hole of the installation base in a matching way; sliding slots in matching sliding with the installation plate are formed on the front side and the rear side of the installation base; lugs are arranged at the front side and the rear side of the top of the installation base; a fastening button for locking and fastening the installation base is arranged on each lug; an outer insulating ring is sleeved on the outside of the installation plate; the installation plate is clamped in a split-mouth type neck of the outer insulating ring, and rubber blankets are arranged at the left side and the right side of the installation base. By use of the integrated device disclosed by the invention, the movable regulating and locking of the tapping switch body are convenient, the use is relatively convenient, the reliability is high, and the integrated device has the anti-collision protection effect on two tapping switch bodies.