Self-adhesive signboard

The utility model discloses a self-adhesive signboard which can be adhered to a cabinet door or an overhaul screen and can play an excellent role in warning maintenance personnel. The self-adhesive signboard comprises a polyurethane liner, bristles and a color printing film, one side of the polyurethane liner is provided with a plurality of bristles, and the other side is provided with a color printing film; and the bristles are provided with a plurality of fluff used for sticking the signboard. When the self-adhesive signboard is attached to the cabinet door or the maintenance screen; the bristles are in contact with the plane to be bent; the fluff on the bristles is in contact with the sticking plane as much as possible; van der Waals' force exists between the fluff and the pasting plane, the Van der Waals' force enables the self-adhesive signboard to be pasted to the position at a certain height away from the ground, maintenance personnel can obtain a warning effect conveniently, and therefore the self-adh