Manufacture method of small ultrasonic transducer

The invention discloses a manufacture method of a small ultrasonic transducer, which comprises the steps of: an element bonding procedure; an element electrode manufacturing procedure; a base bonding procedure; a radiation plate bonding procedure; and a housing assembling procedure. The element electrode manufacturing procedure comprises the steps of: a, pre-drying: placing an element on a support plate, dropping conductive glue on one upward surface of a piezoelectric ceramic sheet of the element by using a glue dropping machine, bonding one end of a first lead with the conductive glue, then placing the element and the support plate in a drying oven together for pre-drying; and b, curing: taking the element and the support plate from the drying oven to ensure that the other surface of the piezoelectric ceramic sheet faces upwards, dropping the conductive glue on the other surface of the piezoelectric ceramic sheet by using the glue dropping machine, bonding one end of a second lead with the conductive glue,