Abstract: Disclosed herein is a toilet mounted bidet. The toilet mounted bidet includes a mounting plate attached to a toilet bowl. The toilet mounted bidet further includes an ejection nozzle that is comprised of a nozzle body and a nozzle cap joined together. The nozzle body is provided through the center portion thereof with a center ejection hole and along the outer surface thereof with a plurality of circumferential ejection grooves to allow washing water ejected through the center ejection hole to be integrated with the circumferential ejection holes. An arm is hingedly attached to the mounting plate and provided at its one end with the ejection nozzle. A water supply pipe supplies washing water to the ejection nozzle. Water pressure adjusting means optionally adjusts the pressure of washing water by adjusting the opening ratio of the water supply pipe.