An ultrasound endoscope 1 includes an insertion portion 2 that is inserted into a subject, an ultrasound transducer portion 11 that is arranged at a distal end portion 5 of the insertion portion 2 and includes an ultrasound transmitting and receiving surface for transmitting and receiving ultrasound, a first balloon groove 12a that is a groove formed between the insertion portion 2 and the ultrasound transducer portion 11 and is for locking a balloon that covers the ultrasound transmitting and receiving, a distal end face 5a that is arranged on a distal end side with respect to the ultrasound transducer portion 11 and is disposed spaced apart from the ultrasound transmitting and receiving surface, and a convex portion 14 that is provided on the distal end face 5a and on which stress concentrates when a finger is slid on the distal end face 5a.
