An ultrasonic probe is provided with a first vibrating body including a first distal treatment section which vibrates at a predetermined frequency and with a first amplitude when the ultrasonic vibration is transmitted. The ultrasonic probe includes a second vibrating body extending in a same range as the first vibrating body in axially parallel directions parallel to a longitudinal axis and being discontinuous with the first vibrating body over an entire length in the axially parallel directions. The second vibrating body includes a second distal treatment section vibrating at the same predetermined frequency as the first distal treatment section and with a second amplitude greater than the first amplitude when the ultrasonic vibration is transmitted.
