The present invention provides an adhesion-type holding structure mounted onto a wall comprising: a main attaching member including a holding portion for bearing an external object, and an adhering portion for adhering to a wall; a backup attaching member including an adhering portion for adhering to a wall; and a safety mechanism including a replacement device disposed between the main attaching member and the backup attaching member. When the main attaching member and the backup attaching member are attached to a wall on positions close to each other and the main attaching member comes loose from the wall and falls down, the backup attaching member can prevent, by means of the replacement device, the main attaching member from falling down, and timely replaces the main attaching member to hold the holding portion.