There is provided an apparatus which supplies a cancer therapeutic agent to as only an object as possible. An apparatus for supplying a cancer therapeutic gent to the object (24) comprises: (A) a fluid replacement supply unit which quantitatively supplies a fluid replacement containing the cancer therapeutic agent into a blood vessel leading to the object (24); and (B) a fluid replacement withdrawing unit which quantitatively withdraws the fluid replacement having passed through the object (24) from a blood vessel coming from the object. <IMAGE>
