Calcium chloride can be used in low blood calcium, allergy, cardiac resuscitation, it is a colorless liquid, need to be injected by intravenous drip, it can be supplemented for hypocalcemia, and also can be supplemented for electrolytes, the specific concentration needs to be judged according to the test results. If the patient needs to carry out cardiopulmonary resuscitation, it can be used as a cardiotonic agent, and the dosage is not more than 1ml per minute.Calcium chloride belongs to the high concentration of calcium, and magnesium belongs to the competition, so it is often used for the detoxification of magnesium intoxication in the clinic. Calcium chloride has a strong irritant, so it is not usually injected by intramuscular injection, and children are also less likely to use this product.