Abstract: A solution bottle has a the bottle body with a bottle opening and a cover for tightly sealing the solution bottle. A press portion is formed at a predetermined portion of the cover. Between an interior of the press portion and the bottle body is installed with a small bag for receiving reactant. The small bag serves to isolate the reactant from the solution in the bottle body so that the reactant is well stored therein. If necessary, the small bag is broken by pressing the press portion so that the reactant will mix with the solution. Moreover, by shaking the bottle, the reactant resolves in the solution completely for use.