An ultrasonic probe includes a probe main body performing a vibration including a longitudinal vibration in a vibrating direction parallel to a longitudinal axis, and a distal treatment section positioned on a distal side with respect to a most distal node position positioned most distally among node positions of the longitudinal vibration in the probe main body. The distal treatment section includes a contact surface, and the ultrasonic probe includes a coating portion with which at least a part of a surface other than the contact surface in the distal treatment section is coated, and which is made of a material having a higher heat resistance than the probe main body.
