A blood pressure monitor is provided, including a housing and a rotating cylinder device. The housing has a bottom surface and is adapted to be placed on a supporting surface. The rotating cylinder device is disposed in the housing for allowing the user to insert his arm thereinto and monitoring the blood pressure. Moreover, the rotating cylinder device has an axis line, wherein the axis line and the bottom surface therebetween form an angle between 10 to 20 degrees.本創作提供一種血壓量測器,包括一殼體以及一旋轉筒裝置,其中殼體具有一底面,適於被放置在一承載面上,旋轉筒裝置位於殼體內,可供使用者之手臂插入並對其進行血壓量測,且旋轉筒裝置具有一軸心線,該軸心線與前述底面之間形成有一角度介於10度至20度之間的夾角。1‧‧‧旋轉筒裝置2‧‧‧殼體2a‧‧‧手臂進入口2b‧‧‧手臂穿出口2c‧‧‧底面2d‧‧‧支撐座3‧‧‧驅動馬達4‧‧‧驅動齒輪組A‧‧‧夾角C‧‧‧軸心線H‧‧‧手臂M‧‧‧血壓量測器S‧‧‧承載面
