Self-adhesive wet-installed modified bitumen waterproofing coil membrane is polymer wet-paved self-adhesive waterproof sheet which is made of polyethylene film or polyester film as base materials and covered with self-adhesive layer and also adopts anti-adhesion isolating layer. This material and cement slurry achieve “skin-type” waterproof effect with the base course relying on chemical reaction and physical mortise and tenon interaction, and can effectively prevent water channeling.