A subcutaneous implantable port (11) is provided which includes a housing, a septum, a bottom plate and a catheter connection part. The housing has a structure in which a cup-shaped base (31) having a bottom which includes a recess is covered by a cover. The septum which can be penetrated by an injection needle is disposed inside the housing. The bottom plate (41) is made of a harder material than the base and is disposed on the bottom part inner surface of the base. The recess has an opening of enlarged diameter. The bottom plate has a plurality of corner parts (43) on the outer peripheral edge thereof. The plurality of corner parts bite into the inside surface of the recess as the bottom plate is press-fitted into the recess along the recess depth direction. The bottom plate is fixed to the bottom part of the base.
