Magnetic detection device

The utility model discloses a magnetism detection device, including support subassembly, sample bearing subassembly, electromagnet subassembly, observation subassembly, probe subassembly, sample bearing subassembly, electromagnet subassembly, observation subassembly, probe subassembly are connected to the support subassembly respectively, sample bearing subassembly, electromagnet subassembly, observation subassembly sets up in proper order from bottom up, probe subassembly sets up in proper order, probe subassembly sets up in proper order, probe subassembly sets up in proper order, probe subassembly sets up in proper order, probe subassembly sets up in proper order. The hollow part is arranged on the magnetic yoke, and the vertical pole head can be detachably mounted in the hollow part, so that the vertical pole head can be detached to observe the needling process during needling, and the vertical pole head can be mounted back to form a corresponding magnetic field after needling is completed, the vertical po