The invention discloses a medical instrument for the Department of Respiratory. The medical instrument comprises a base and a frame body, wherein the frame body is fixedly arranged above the base through supporting columns; a placement groove of which the groove opening faces upward is formed in the top end surface of the base; a placement column which extends upward is fixedly arranged in the placement trough; a concave groove of which the groove opening faces upward is formed in the top end surface of the placement column; a vessel is rotatably mounted in the concave groove; a first rotatinggroove is formed in the inner bottom wall of the concave groove in a downward extending manner; a first rotating pin shaft is rotatably arranged in the first rotating groove; the right side end of the rotating pin shaft is rotatably arranged in the inner wall of the right side of the first rotating groove; the left side end of the rotating pin shaft is in power connection with a first motor; thefirst motor is fixedly arranged in the inner wall of the left side of the left side of the first rotating groove; a rotating disc is fixedly arranged on the first rotating pin shaft; and a fan-shapedelectric conducting gear is fixedly arranged on the excircle of the rotating disc.