It is an object to provide a cuff for blood pressure meter wherein a tightening mechanism and a holding mechanism have structures with good mechanical strength to enable the improvement of durability and a size reduction, fittability to an arm is improved to achieve higher accuracy of a blood pressure measurement, and operability can be improved.A cuff for blood pressure meter (1) comprises a tightening mechanism (2) for tightening a flexible cuff (11), and a holding mechanism (3) for holding the tightening position of the tightened flexible cuff (11). The tightening mechanism (2) includes a rack (42) formed in a tightening belt (4), and a pinion gear (22). When the pinion gear (22) is rotated, the rack (42) is moved in a tightening direction. The holding mechanism (3) includes holding holes (43) formed at a plurality of positions in the longitudinal direction of the tightening belt (4), and holding pins (31) which engage into the holding holes (43). The holding pins (31) engage in the holding holes (43) so that the tightening position of the tightened flexible cuff (11) is held.
