An NMR probe which has a multi-element switching mechanism. The NMR probe has a rotary tuner block, a contact unit, a rotationally driving unit for rotating the rotary tuner block. The rotary tuner block has an NMR probe body, a rotary body, and plural pairs of tuning elements disposed on the surface of the rotary body. This rotary body is rotatably held in the NMR probe body and made of a nonmagnetic material. A sample coil is mounted in the NMR probe body. The contact unit selectively brings the pairs of tuning elements into contact with both ends of the sample coil or with lead wires brought out from both ends of the sample coil. The pairs of tuning elements are selectively connected with the sample coil by rotation of the rotary tuner block.