The treatment of hypocalcemia can be divided into symptomatic treatment and etiological treatment. The main symptomatic treatment is calcium and vitamin D. If the degree of low calcium is not particularly severe and there are no clinical manifestations, oral calcium supplementation plus vitamin D can be administered, and if a hypocalcemic crisis occurs, 10% calcium chloride or 10% calcium gluconate 10-20 ml can be administered intravenously and repeated within 1-2 hours if necessary. If the patient is convulsing, use 20-30 ml of 10% calcium chloride or 10% calcium gluconate added to 1000 ml of 5%-10% glucose solution in a continuous intravenous drip. When calcium supplementation is not effective, attention should be paid to the presence of low blood magnesium, and magnesium can be supplemented if necessary. The etiology of hypocalcemia is also treated according to the cause of hypocalcemia. Common causes of hypocalcemia include hypoparathyroidism, lack of vitamin D, chronic renal failure, hyperphosphatemia, etc.