Calcined Magnetite has the effects of tranquilizing the mind (using ores and shellfish to stabilize the mind), calming the qi and asthma (astringing the qi to alleviate coughing and wheezing), and benefiting the kidneys and submerging the yang, and is mainly used for treating restlessness of mind and spirit, insomnia, deafness and tinnitus, and other disorders. Caution should be exercised if the spleen and stomach are weak. It is recommended to use the medicine under the guidance of a doctor. Magnetite is salty in taste and cold in nature. Attributes to the liver, heart and kidney meridians. It has the effects of calming the mind (using drugs of heavy nature to stabilize the mind), calming the liver and subduing yang (suppressing too much rising yang qi in the liver), brightening the ears and eyes, and calming the qi and asthma. It is used in treating palpitations and insomnia, dizziness, blurred vision, tinnitus and deafness, and kidney deficiency and asthma. Calcined Magnetite is concocted from magnetite. First of all, the net magnetite smashed into small pieces, placed in a crucible, with a smokeless fire will be calcined red through, and then removed, and then poured into the vinegar basin quenched crisp, mashed, repeated calcined quenched to crisp, removed from the sun, and then studied into fine powder. The texture of calcined magnetite after quenching is crispy, easy to crush and decoct the active ingredients, and its effect of tranquilizing the mind has been moderated, and the effect of naturing the qi and calming the asthma, benefiting the kidneys and submerging the yang has been enhanced.