Magnesium supplementation medicine is divided into oral and intravenous drip and other dosage forms, the body magnesium deficiency, can appear obvious changes, resulting in hypocalcemia, affect the neuromuscular excitability, early manifestation of neuromuscular hyperexcitability, muscle tremor, hand and foot twitching, hyperreflexia, ataxia, in serious cases can appear delirium, confusion and other symptoms. 1, oral magnesium supplementation medicine: such as potassium magnesium menthylate tablets, magnesium gluconate granules. Potassium magnesium menthylate tablets main components for potassium menthylate and magnesium menthylate, can improve the intracellular potassium ion concentration, magnesium gluconate particles can increase the blood magnesium concentration, but also maintain the blood magnesium concentration after intravenous drip magnesium sulfate; 2, intravenous drip drugs: such as magnesium sulfate injection, can prevent hypomagnesemia, prevent magnesium deficiency, and reduce blood pressure, commonly used in pregnancy hypertension, because magnesium sulfate injection contains benzyl alcohol Therefore, it is prohibited in children intra-muscular injection, in addition, myocardial injury, heart block and other patients also need to prohibit intravenous drip injection of this drug. The above magnesium drugs need to be used under the guidance of doctors, during the use of the need to monitor the concentration of magnesium and potassium in the blood at the same time, to prevent magnesium ions, potassium ions in excess, causing magnesium toxicity, diarrhea, nausea, gastrointestinal cramps, hypotension, drowsiness, weakness, tendon reflexes weakened or disappeared, respiratory paralysis. In addition, to avoid excess supplementation, can be directly through the intake of food to supplement magnesium ions, such as nuts, millet, oats, seaweed, etc.