Abstract: An adjustable device for a monitor camera includes a-cone-shaped body which has an opening at a decreasing end, a cylindrical projection, a cushion with a rough surface, a spherical body with a link extended axially and a cylindrical cover having two ends one of which has a plurality of barbs and a number of stripes thereon, the other end has an arc hole. A peripheral side wall of the end has a plurality of ribs extended latitudinally and a plurality of stripes thereon. The ribs connect with the cylindrical projection which projects out from the opening and has a seat on a distal end. The cushion is configured and situated within the seat of the cylindrical projection. The spherical body then rests on the cushion after the link is inserted through the arc hole and the barbs are inserted into the holes and firmly engage with the peripheral side wall of the inner surface.