The peristaltic pump (1) comprises: a sensor (53, 57) of the force exerted between the bearing member (19) and the counter-member (24) between which a tube (6) is held; and a processing unit comprising means for determining, from the signal supplied by the sensor (53, 57), if predetermined conditions indicative of correct positioning of the tube (6) between the bearing member (19) and the counter-member (24) have been satisfied.