The invention discloses a JP cabinet cable outlet plugging cover which comprises a fastening ring. Two fastening screws are respectively and symmetrically arranged at both left and right sides of the fastening ring; an anti-skid cushion is arranged inside the fastening ring; a plugging face is arranged at the bottom inside the fastening ring; and an insulation pad is arranged on the plugging face. According to the JP cabinet cable outlet plugging cover, stuffing of objects into a JP cabinet by an external force and a bird damage phenomenon are effectively prevented; wear damage to a cable at an outlet of the JP cabinet is greatly reduced; and the JP cabinet cable outlet plugging cover is simple and reasonable in structural design, and has a good insulation effect and a long service life.