To provide an adhesive sheet forming device and method capable of preventing a cutting blade from being damaged and capable of avoiding occurrence of stringiness and chips from a cut edge.

A die-cut device 15 is provided to form an adhesive sheet S by providing a raw sheet L with an outside cut 11 and an inside cut 12 from the sheet FS side, and a pick-up device 17 is provided to eliminate an unnecessary sheet part S1 surrounded by the inside cut by forming a punching cut 16 inside the inside cut 12.