Provided is an administration apparatus which administers a dosing liquid containing a prescribed substance to an object region, the administration apparatus including: a storage unit which stores the dosing liquid； a drive unit which imparts administration energy； a pressurization unit which pressurizes the dosing liquid stored in the storage unit with the administration energy in the drive unit； and an injection unit which injects the dosing liquid having been pressurized by the pressurization unit to the object region through an injection port. The pressurization unit pressurizes the dosing liquid so that, in an injection pressure transition of the dosing liquid corresponding to generation of administration energy, a vibration in the injection pressure transition reaches a converged state within a prescribed period of time from a rising time of pressure and, at the same time, a ratio of a peak value of an initial first vibration element in the vibration within the prescribed period of time to a peak value of subsequent vibration elements other than the first vibration element is higher than 1 and equal to or lower than a prescribed first ratio. As a result, invasiveness to the object region during administration is reduced.
