The invention relates to a T-type superpower ultrasonic transducer. The T-type superpower ultrasonic transducer utilizes a longitudinal vibration piezoelectric ceramic vibrator to generate longitudinal vibration, stimulates a metal round vibration disc directly connected with the longitudinal vibration piezoelectric ceramic vibrator to generate the vibration of the same frequency, and radiates sound waves to media. With the help of the conversion of the vibration mode, flexural vibration is generated in the metal round vibration disc, effective conversion of the longitudinal vibration mode and the flexural vibration mode is achieved, uniformity of the radiation sound field of the transducer is greatly improved, radiation area of the transducer can be effectively increased, high-power working is realized, at the same time, radiation impedance of the transducer is improved, acoustic matching of the transducer is improved, and radiation efficiency of the transducer is improved. In addition, due to the fact that the flexural vibration disc has multiple vibration modes, the transducer can work in different vibration modes and radiate ultrasonic waves of different frequencies, and therefore an ultrasonic wave source working in multiple frequencies is formed.