PROBLEM TO BE SOLVED: To provide a subcutaneously implanting-type port having a new structure that can effectively prevent or eliminate retention of drug solution to a lumen.SOLUTION: The subcutaneously implanting-type port 10 includes: the lumen 18 for storing drug solution which is formed by closing an opening 14 of a base housing 12 with a plug body 16; and flow passage 20 communicated to the lumen 18 to allow the drug solution to flow out. In the subcutaneously implanting-type port, a movable body 58, at least part of which is formed of a ferromagnetic material, is provide in the lumen 18 to move the movable body 58 by exerting magnetic force on the movable body 58 from the outside of a patient's body.