The invention relates to the technical field of ultrasonic probes, in particular to an ultrasonic array 
probe signal acquisition component and a preparation method thereof, and a probe. The acquisition component provided by the invention comprises two or more 
probe array elements, each 
probe array element comprises a backing and a piezoelectric layer composed of two or more piezoelectric 
crystal plates; flangings of positive electrodes and negative electrodes of the two piezoelectric 
crystal plates are butted; the piezoelectric layer is divided into a lead region, a heat conduction region and a 
signal region; a backing is connected to the 
signal region, and the bottom of the backing is connected with the bottom of the backing of an adjacent 
probe array element; a heat dissipating piece is connected to the heat conduction region, and the heat dissipating piece is connected with the ground 
electrode of an outer cable; and a flexible circuit board is connected with the lead region, and the flexible circuit board is connected with the outer cable through the probe circuit board. According to the ultrasonic array 
probe signal acquisition component and the probe provided by invention, the problem of probe temperature rising is effectively solved, the send-receive capacity of signals is improved, probe functions of testing 
image resolution ratio and sharpness are improved, and the 
impact of the probe 
array element signal crosstalk to imaging sharpness is decreased.