The invention discloses an automatic blood pressure measurement device. The automatic blood pressure measurement device comprises a supporting shell, a sleeve, an air bag cuff, a tightening mechanism and a tightening motor. The automatic blood pressure measurement device is characterized in that the tightening mechanism is connected with a shell of the sleeve through a rotary shaft, and the tightening mechanism can swing up and down in the sleeve with the rotary shaft as the circle center. According to the automatic blood pressure measurement device, unidirectional pressure exerted on a measured limb can be greatly reduced, and the measurement precision of the automatic blood pressure measurement device is improved in addition, the structure of the device is optimized, and production and maintenance of the device are facilitated.
