This creation, which ties up to, provides a kind of gypsum cutter,Main system is equipped with a lever,Battery is equipped in the lever,The lever is equipped with switch,The open relation and the battery are electrically connected,One end of the lever is equipped with a connecting rod,A transmission motor is equipped in the outer end of the connecting rod,The shaft system of the transmission motor protrudes out outside the connecting rod,The shaft is equipped with a saw blade,The transmission motor is equipped with the battery in power supply line and the lever and is electrically connected,The lower section of the lever is equipped with a baffle,The arc-shaped shape of baffle system extends to the lower section of the saw blade,The one side system of the baffle upwardly extends equipped with blocking face,In this way,When cutting gypsum,By the protection in the baffle and its blocking face,It can prevent the saw blade from accidentally injuring patient when cutting gypsum,Cutting gypsum is set to have more safety.本創作係在提供一種石膏切割器,主要係設有一握柄,該握柄內設有電池,該握柄上設有開關,該開關係與該電池電性連接,該握柄之一端設有一連接桿,該連接桿之外端部內設有一傳動馬達,該傳動馬達之轉軸係凸伸出該連接桿外,該轉軸上設有一鋸刀,該傳動馬達設有電源線與該握柄內之電池電性連接,該握柄之下方設有一擋板,該擋板係呈弧形狀延伸至該鋸刀之下方,該擋板之一側面係向上延伸設有擋持面,如此,在切割石膏時,藉由該擋板及其擋持面之保護,可防止該鋸刀在切割石膏時不小心傷及患者,使切割石膏更具安全性。