To provide a pressure-sensitive adhesive sheet which has tacky portions having different tack on one or both surfaces thereof and is suitable for recycling.

The pressure-sensitive adhesive sheet has a pressure-sensitive adhesive base paper having a plurality of tacky portions having different tack strength on one or both surfaces thereof and a release paper covering the tacky portions, and the amount of the residue in the dissociation test is less than 50 mg, and the pressure-sensitive adhesive sheet is totally dissociable, and the tacky portions having different tack strength are formed of pressure-sensitive adhesives having different tack strength, and in part of the tacky portions or all tacky portions, the pressure-sensitive adhesive layers have undergone a non-tackifying treatment.