PROBLEM TO BE SOLVED: To provide an instillation auxiliary capable of facilitating delicate instillation operation even by an older person or the like, and enabling the whole hand to adjust force by an enfolding action by a palm.SOLUTION: An instillation auxiliary includes: a pressing wing having a fulcrum part, an action point part, and a force point part having a longer distance from the fulcrum part than a distance between the fulcrum part and the action point part; and a bottle holding part. By applying force to the force point part, larger force than the force applied from the action point part to a liquid medicine bottle held by the bottle holding part.SELECTED DRAWING: Figure 24COPYRIGHT: (C)2018,JPO&INPIT