An adhesive plaster structure capable of being attached to a finger or toe (F) along a lateral nail edge (Ns) for treating wound (Fi) neighboring ingrown nail (N), the adhesive plaster structure comprising: (i) a wound adhesion area having a flexible wound adhesion surface to be adhered to the wound (Fi) neighboring the ingrown nail (N); and (ii) a guide area having a slide groove that is capable of receiving the lateral nail edge (Ns), the slide groove being capable of sliding in a longitudinal direction of a nail (N) along the lateral nail edge (Ns), wherein the wound adhesion area is formed by a soft body, the guide area is formed by a hard body, the adhesive plaster structure has an approximately rod shape, when an end portion of the adhesive plaster structure adapted to be located at a root side of the finger or toe (F) is defined as a tip portion and an end portion of the adhesive plaster structure adapted to be located at a tip side of the finger or toe (F) is defined as a rear end portion in a state that the adhesive plaster structure is attached to the finger or toe (F), the slide groove extends at least over a part of a length between the tip portion and the rear end portion of the adhesive plaster structure in the longitudinal direction of the adhesive plaster structure , and the flexible wound adhesion surface is capable of being arranged between the lateral nail edge (Ns) and the wound (Fi) neighboring the ingrown nail (N) when the adhesive plaster structure is attached to the finger or toe (F). (i) a wound adhesion area having a flexible wound adhesion surface to be adhered to the wound (Fi) neighboring the ingrown nail (N); and (ii) a guide area having a slide groove that is capable of receiving the lateral nail edge (Ns), the slide groove being capable of sliding in a longitudinal direction of a nail (N) along the lateral nail edge (Ns), wherein the wound adhesion area is formed by a soft body, the guide area is formed by a hard body, the adhesive plaster structure has an approximately rod shape, when an end portion of the adhesive plaster structure adapted to be located at a root side of the finger or toe (F) is defined as a tip portion and an end portion of the adhesive plaster structure adapted to be located at a tip side of the finger or toe (F) is defined as a rear end portion in a state that the adhesive plaster structure is attached to the finger or toe (F), the slide groove extends at least over a part of a length between the tip portion and the rear end portion of the adhesive plaster structure in the longitudinal direction of the adhesive plaster structure , and the flexible wound adhesion surface is capable of being arranged between the lateral nail edge (Ns) and the wound (Fi) neighboring the ingrown nail (N) when the adhesive plaster structure is attached to the finger or toe (F). the wound adhesion area is formed by a soft body, the guide area is formed by a hard body, when an end portion of the adhesive plaster structure adapted to be located at a root side of the finger or toe (F) is defined as a tip portion and an end portion of the adhesive plaster structure adapted to be located at a tip side of the finger or toe (F) is defined as a rear end portion in a state that the adhesive plaster structure is attached to the finger or toe (F), the slide groove extends at least over a part of a length between the tip portion and the rear end portion of the adhesive plaster structure in the longitudinal direction of the adhesive plaster structure , and the flexible wound adhesion surface is capable of being arranged between the lateral nail edge (Ns) and the wound (Fi) neighboring the ingrown nail (N) when the adhesive plaster structure is attached to the finger or toe (F). <EOS>