Industry shortage: The innovation of mineral exploration technology can greatly promote the discovery' of new ore deposits. In the 21 st century, the probability of finding traditional near-surface deposits is less and less, and the exploration industry begins to expand to deep (500m-2000m) and male entry areas. New mineral detection requires higher sensitivity, which putshigher requirements for existing detection equipment. Empowered value: Quantum precision magnetic measurement technology is expected to provide a set of better solutions for ore exploration technology. This scheme has the advantage of high sensitivity of magnetic measurement, and can be directly used in room temperature and geomagnetic environment, with small volume, low power consumption and easy to use.