The main symptom of hypocalcemia is an abnormality in muscle contractile function, and the main methods of treatment for hypocalcemia are oral medication as well as intravenous calcium. 1. Symptoms: The normal concentration of serum calcium ranges from 2.25 to 2.75 mmol/L. Below this normal range, hypocalcemia is considered as low blood calcium, which may cause numbness and pain around the fingers, toes and mouth. If the condition worsens, a small number of patients may even cause cardiac arrhythmia. 2.Treatment: . Can listen to the doctor’s advice oral vitamin D, take calcium gluconate, calcium carbonate, etc., can also be injected intravenously calcium, such as intravenous calcium gluconate, etc., but also drink more milk and eat more eggs, tofu and other foods with high calcium content, which can help hypocalcemia get better. During the treatment period, patients should pay attention to the regular to the hospital to test the electrolyte composition of the body, until the blood calcium supplementation to the standard level should be promptly discontinued, so as not to cause hypercalcemia, endangering the safety of life.