An ultrasonic probe and an ultrasonic detecting device provided with the ultrasonic probe. The ultrasonic probe includes: an ultrasonic transducer array configured to transmit and receive ultrasonic waves; a conducting device disposed at the front end of the ultrasonic transducer array, and the conducting device includes a fluid chamber filled with fluid. The fluid chamber has an opening and an energy receiving port which are in communication with each other, and the opening is disposed on a front surface of the conducting device and covered by an elastic film; an energy applying device, connected to the energy receiving port to apply energy to the fluid within the fluid chamber to make the elastic film vibrate so as to generate a shear wave.