Task Continuously moisturize mouth and throat during exercise, can give preferred humidity to mouth and throat according to personal difference of wearer of exercise amount and mouthpiece control mouthpiece, and floats in the air When breathing sensors are attached to the respiration control mouthpiece, it is possible to exercise while confirming the rhythm of the respiration during his / her favorable exercise, if dust and insects and the like are prevented from entering directly from the mouth and nose Provide a respiratory control mouthpiece.SOLUTION: A moisture retainer having open cells for holding moisture is detachably provided on the inside of the breath control plate so that one or more water storage cavities are provided in the moisture retainer or water supply connected to the moisture retainer Characterized in that a container is provided or in place of the moisture retaining device having open cells, a particle collecting filter is provided around the respiration control plate to prevent invasion of dust and impurity particles floating in the outside air .【課題】 運動中は継続して口や喉に潤いを与えることが出来、運動量や呼吸制御マウスピースの装着者の個人的差異に応じて口や喉に好ましい湿度を与えることが出来、かつ空中に浮遊する塵埃や虫等が直接、口や鼻から入るのを阻止し、さらに呼吸制御マウスピースに呼吸センサーを装着した場合、自身の良好な運動中の呼吸のリズムを確認しながら運動を行なうことが出来る呼吸制御マウスピースを提供する。【解決手段】 呼吸制御板の内側に湿気を保持する連続気泡を有する湿気保持具を着脱自在に設け、該湿気保持具に水の貯蔵空洞部を1又は複数箇所設けるか、あるいは湿気保持具に連結する水供給容器を設けるか、又は前記連続気泡を有する湿気保持具に代えて前記呼吸制御板の周囲に、外気中に浮遊する砂塵や不純物粒子の侵入を阻止する粒子捕集フィルターを設けたことを特徴とする。