Via hole connecting structure

The utility model discloses a via hole connection structure, including sheath, at least one cable, shielding mechanism and terminal, the sheath includes sheath body, back cover and sealing structure, the sheath body is provided with the mounting hole that corresponds to the number of cable, the shielding mechanism is provided with the sealing structure, and the sealing structure is provided with the sealing structure. The cable comprises a cable core, an insulating layer and a shielding layer, wherein the insulating layer and the shielding layer wrap the cable core. The rear cover is provided with a mounting hole, the shielding mechanism is at least partially arranged in the mounting hole, the cable sequentially penetrates through the rear cover, the mounting hole and the shielding mechanism, the cable core is electrically connected with the terminal, and the shielding layer is electrically connected with the shielding mechanism; the rear cover is used for locking the sheath body, and the sealing structure se