A medical solution applying container comprising: a medical solution container body for storing a medical solution; an inside stopper attached at a lower end portion thereof to the medical solution container body, a brush attached to an upper end portion of the inside stopper so as to apply the medical solution, the inside stopper comprising: a brush inserted-and-mounted hole to which the brush is inserted and mounted; and a pressing-for-maintaining portion provided in a lower end portion of the brush inserted-and-mounted hole, the pressing-for-maintaining portion pressing a lateral periphery of the brush so as to maintain a position of the brush with respect to the inside stopper, wherein the pressing-for-maintaining portion includes a plurality of tongue pieces, and the plurality of tongue pieces are disposed through a plurality of gaps formed therebetween, each of the plurality of gaps extending along the brush inserted-and-mounted hole, characterized in that it is possible to adjust the amount of the medical solution permeating the lower end portion of the brush, depending on to what extent the lower end portion of the brush is protruded and exposed from the brush inserted-and-mounted hole towards the interior of the medical solution container body. a medical solution container body for storing a medical solution; an inside stopper attached at a lower end portion thereof to the medical solution container body, a brush attached to an upper end portion of the inside stopper so as to apply the medical solution, the inside stopper comprising: a brush inserted-and-mounted hole to which the brush is inserted and mounted; and a pressing-for-maintaining portion provided in a lower end portion of the brush inserted-and-mounted hole, the pressing-for-maintaining portion pressing a lateral periphery of the brush so as to maintain a position of the brush with respect to the inside stopper, wherein the pressing-for-maintaining portion includes a plurality of tongue pieces, and the plurality of tongue pieces are disposed through a plurality of gaps formed therebetween, each of the plurality of gaps extending along the brush inserted-and-mounted hole, a brush inserted-and-mounted hole to which the brush is inserted and mounted; and a pressing-for-maintaining portion provided in a lower end portion of the brush inserted-and-mounted hole, the pressing-for-maintaining portion pressing a lateral periphery of the brush so as to maintain a position of the brush with respect to the inside stopper, wherein the pressing-for-maintaining portion includes a plurality of tongue pieces, and the plurality of tongue pieces are disposed through a plurality of gaps formed therebetween, each of the plurality of gaps extending along the brush inserted-and-mounted hole, the pressing-for-maintaining portion includes a plurality of tongue pieces, and the plurality of tongue pieces are disposed through a plurality of gaps formed therebetween, each of the plurality of gaps extending along the brush inserted-and-mounted hole, characterized in that it is possible to adjust the amount of the medical solution permeating the lower end portion of the brush, depending on to what extent the lower end portion of the brush is protruded and exposed from the brush inserted-and-mounted hole towards the interior of the medical solution container body.