The invention relates to a device for the continuous uniform conditioning of ground olive paste using power ultrasound, in order to heat a ground olive paste moving through a pipe (2). The device comprises: an applicator (2) for applying power ultrasound to olive paste; a first temperature sensor (3) for determining the temperature prior to the application of ultrasound; a physical-chemical sensor (4) for determining parameters of the olive paste prior to the application of ultrasound; a flow meter (5); and a second temperature sensor (6) for determining the temperature after the application of ultrasound. A controller (7) acts on the ultrasound applicator (1) and on the flow meter (5) according to the values obtained by the first (3) and second (6) temperature sensors and the physical-chemical sensor.