The utility model relates to a magnetic resonance imaging clamper, which comprises a cylinder, a sample tube arranged inside the cylinder, two core plugs and an upper end socket and a lower end socket. The cylinder is made of high-strength non-metal material, a sample tube accommodating zone is arranged in the inner cavity of the cylinder, a gap allowing coolant to pass through is arranged between the sample tube and the inner wall of the cylinder, the sample tube adopts a heat shrinkable tube, the two core plugs are respectively passes through both ends of the sample tube to clamp the two ends of a sample, the upper end socket and the lower end socket are respectively screwed into two ends of the cylinder to seal the cylinder, the two core plugs respectively passes through the upper end socket and the lower end socket to protrude out of the cylinder, connectors for communicating with the outside are arranged in the upper end socket and the lower end socket, and passages allowing water flow and gas flow to pass through are arranged inside the two core plugs. The magnetic resonance imaging clamper be used for magnetic resonance imaging test of natural sedimentary stratum, is convenient for operation, has low cost, and can avoid the interference from metal material to magnetic resonance imaging signals.