Circuit tapping device

A line tapping device effectively solves the problem that an existing tapping device is inconvenient to use. Comprising a main body column in the front-back axial direction, the front end of the main body column is provided with a plurality of tapping holes which are evenly distributed in the circumferential direction of the main body column and are through in the front-back direction, and the rear side in the main body column is coaxially provided with a pull-down groove; a plurality of L-shaped lower pull rods which are in one-to-one correspondence with the tapping holes are slidably connected into the lower pull groove, a plurality of ejector rods which are located in front of the lower pull rods and can move up and down are arranged in the containing groove, and the upper ends of the ejector rods and the lower ends of the connecting rods are inserted into the corresponding tapping holes correspondingly and provided with arc-shaped clamping plates correspondingly. A plurality of swing rods which are in one