Disclosed is a three-dimensional probe apparatus. The probe apparatus includes a drive unit (120) generating power in a forward or rearward direction, a power transmission unit (130) transmitting the power in association with the drive unit (120), a transducer (140) receiving the power from the power transmission unit (130) to move towards a plurality of locations for operation, and a location detector (150) detecting a moving location of the transducer (140) to allow the transducer (140) to move towards the plurality of locations for operation. The transducer (140) may move towards a plurality of locations for operation and the location detector (150) may detect a moving location of the transducer (140) to define the location of the transducer (140) so as to differently control the operation of the transducer (140) in accordance with the moving location of the transducer (140), so that the probe apparatus can perform the probing operation in a plurality of directions at one position without changing the probing direction.
