An ultrasound probe according to the present disclosure includes: an ultrasound element unit 2 a tip storage portion 7 including a panel which is sealed by a holding member and in which an acoustic medium liquid 6 and the ultrasound element unit 2 are stored a cover member 17a disposed on a surface of the holding member 10a and an acoustic medium liquid reservoir portion 15a for retaining the acoustic medium liquid 6 in a space formed by the holding member 10a and the cover member 17a. The holding member 10a has at least one communication path that communicates with the acoustic medium liquid reservoir portion 15a and an inside of the tip storage portion 7. The cover member has at least one ventilation path that communicates with the acoustic medium liquid reservoir portion and an outside of the tip storage portion. In the acoustic medium liquid reservoir portion, a cross-sectional area of a space of a part that communicates with the ventilation path is larger than a cross-sectional area of a space of a part that communicates with the communication path.
