The present invention aims at providing an adhesive preparation superior in adhesion operability. The adhesive preparation 10 of the present invention includes a substrate layer 1, an adhesive layer 3and a separator 5 laminated in this order. The adhesive preparation 10 has an about quadrate planar shape. The separator 5 is divided into two pieces by an about wavy parting line 7, which starts from an about quadrate corner A1 and ends at an about quadrate corner A2 next to the corner A1. The separator 5 has a dashed line-like cut line 9 between the neighboring vertices (B1, B2) of the partingline 7 on the center side of the separator 5.