An ultrasonic probe holder which holds and houses an ultrasonic probe including a head including an output surface which outputs ultrasonic waves and a grip extending from the head includes: a bottom that includes a first opening having a size such that the head and the grip of the ultrasonic probe do not pass therethrough； and a tube that extends from the bottom and includes a second opening having a size such that the head and the grip of the ultrasonic probe pass therethrough at an extended end and a slit connected to the second opening and the first opening on the bottom.
