The prickly precious moxibustion stone is a cyclic energy circle composed of rare earth permanent magnets and an integral necklace, which is called full cycle technology. This is a patented technology. The magnetic field intensity of a single magnetic bead reaches about 4000-6000 gauss, and it acts on the human body about 2500-3500 gauss after being connected in a loop. The environmental protection coating on the surface makes the necklace close to the body in a large area and improves the microcirculation.