A sticking apparatus 10 includes a label sticking unit 12 for holding a label L, a drive unit 13 that supports and moves the label sticking unit 12 in the direction away from/closer to the adherend C to be stuck with label and a space maintaining device 14 for ensuring the distance D between the label L held by the label sticking unit 12 and the surface C1 to be stuck with label of the adherend C to a preset distance. The space maintaining device 14 is mounted on the label sticking unit 12 so as to be movable with the label sticking unit 12. The space maintaining device 14 has a contact member 46, which changes its position when the same comes into contact with the surface C1 to be stuck with label and a single sensor 47 for detecting the position change of the contact member 46, and when the distance D reaches to a preset distance, detects the position of the contact member 46 to stop moving of the label sticking unit 12.