Disclosed is an infusion port for regulating the inflow of an aqueous solution of an aqueous-solution pack into an external ringer spike as at least part of the ringer spike is inserted or withdrawn. The infusion port comprises an inflow part, a securing part, and a cover part. The inflow part is formed with at least one first inflow hole into which the ringer spike is inserted, so as to allow the inflow of the aqueous solution of the aqueous-solution pack as the ringer spike is inserted. Consequently, as the first inflow hole of the inflow part moves outside or inside the securing part, it is possible to regulate the flow of the aqueous solution of the aqueous-solution pack through the first inflow hole and into the ringer spike disposed inside the inflow part.
