An ultrasonic measuring apparatus includes an ultrasonic transducer device having a substrate and an ultrasonic transducer element array that is arranged on the substrate, a first channel terminal group arranged at one edge portion of the ultrasonic transducer element array in a first direction, a second channel terminal group arranged at the other edge portion of the ultrasonic transducer element array in the first direction, a first flexible substrate provided on the one edge portion side and having arranged thereon a first wiring group that is connected to the first channel terminal group, a first integrated circuit apparatus that is mounted on the first flexible substrate and performs at least one of signal transmission to the first channel terminal group and signal reception from the first channel terminal group, a second flexible substrate provided on the other edge portion side and having arranged thereon a second wiring group that is connected to the second channel terminal group, and a second integrated circuit apparatus that is mounted on the first flexible substrate and performs at least one of signal transmission to the second channel terminal group and signal reception from the second channel terminal group. In the ultrasonic transducer element array, channels that are connected to the first channel terminal group and channels that are connected to the second channel terminal group are arranged alternately every channel in a second direction that intersects the first direction.
