Provided is an ultrasonic device including: an ultrasonic element array substrate having a plurality of ultrasonic elements configured to perform at least one of transmission and reception of ultrasound； an acoustic lens configured to focus the ultrasound； an acoustic matching unit formed using resin, the acoustic matching unit being arranged between the ultrasonic element array substrate and the acoustic lens； and a plurality of columnar spacing members arranged between the ultrasonic element array substrate and the acoustic lens so as to be in contact with the ultrasonic element array substrate and the acoustic lens.
