A multi-array type ultrasonic probe apparatus includes n tiles which transmit and receive an ultrasonic beam; and a substrate having n guide portions on which the n tiles are mounted, respectively, to be aligned in a multi-array. The multi-array ultrasonic probe apparatus may align tiles in identical directions and at identical levels to control a direction and a time for transmitting and receiving an ultrasonic beam to be transmitted and received at the tiles, thereby providing a stable ultrasonic beam.