To provide a sheet sticking device excellent in versatility, capable of changing a suction domain in a short time.

A sheet sticking device 1 includes: sending-out means 2 for sending out an adhesive sheet AS; holding means 3 having an adsorption face 35 and a plurality of suction holes provided on the adsorption face 35, for holding the sent-out adhesive sheet AS; sticking means 4 for sticking the held adhesive sheet AS in the abutting state on an adherend WK; and suction domain changing means 5 capable of changing largeness of the suction domain by treating as the suction domain, a domain where suction holes to which suction force is imparted exist on the adsorption face 35. The plurality of suction holes are provided side by side in a first direction in the adsorption face 35, and the holding means 3 has first direction holes communicating mutually suction holes in the first direction, and the suction domain changing means 5 includes a first direction insertion member 51 provided so that the suction holes to which suction force is imparted can be selected from among the plurality of suction holes by being slid forward and backward in the axial direction with respect to the first direction holes.