To provide a method for recovering performance for recovering reduced receiving sensitivity of an organic piezoelectric element by being used for an ultrasonic probe, an ultrasonograph for obtaining highly fine ultrasonic images by recovering the receiving sensitivity, and a jig used for the method for recovering performance.

A polarization level of the piezoelectric element is recovered by applying a prescribed direct current or alternate current electric field between electrodes when the polarization level of the piezoelectric element is deteriorated for the ultrasonic probe which has the piezoelectric element made of an organic piezoelectric material and the electrodes on both sides of the piezoelectric element and has at least one function of ultrasonic transmission and ultrasonic reception.