An ultrasonic probe, an ultrasonic imaging apparatus including the same, and a method for controlling the same are disclosed, which relate to a method for changing a pulse signal received by an ultrasonic probe by controlling a switching element mounted to an ultrasonic probe during pulse inversion harmonic imaging. The ultrasonic probe includes: a transducer array configured to transmit and receive an ultrasonic signal; a printed circuit board (PCB) electrically connected to the transducer array so as to transmit a pulse signal received from a main body of an ultrasonic imaging apparatus to the transducer array; and a switching circuit configured to change a waveform of the pulse signal received by the PCB and transmitted to the transducer array.