Magnetite has the effects of calming the mind (using drugs of heavy nature to stabilize the mind), brightening the ears and clearing the eyes; it is used for the treatment of palpitations and insomnia, dizziness and dizziness, and blurred vision; the side-effects are not yet clear. Magnetite is a kind of magnetite, salty taste, cold nature, attributed to the liver, heart, kidney meridian, has the effect of calming alarm and tranquillizing the mind, calming the liver and submerging yang (inhibiting the liver from rising too much yang), brightening the ears and eyes, and reducing coughing and asthma by astringent qi (astringent qi to alleviate coughing and asthma); it can be used in the treatment of palpitations and insomnia, dizziness and dizziness, dimming of vision, tinnitus, deafness and asthenia of kidney deficiency and other illnesses. Magnetite should not be taken for a long time, and caution should be taken for those with weak spleen and stomach. The adverse reactions and contraindications of taking Magnetite are not clear, patients are advised to use Magnetite under the guidance of a professional doctor.