Hypercalcemia crisis is hypercalcemia crisis, blood calcium concentration higher than or equal to 2.75mmol/L is hypercalcemia, higher than or equal to 3.75mmol/L is hypercalcemia crisis, the patient will have loss of appetite, polyuria, drowsiness and other adverse reactions, the patient can take drug treatment. Hypercalcemic crisis is caused by high blood calcium concentration, patients with hypercalcemic crisis will have gastrointestinal symptoms such as loss of appetite, nausea, vomiting, etc., and some of the patients will also have urinary symptoms such as polyuria, irritable thirst, and excessive drinking. If the high concentration of calcium in the blood affects the nervous system, drowsiness, trance, hallucinations and other symptoms may occur. Patients with hypercalcemia crisis can follow the doctor’s instructions for intravenous injection of furosemide injection and other diuretics, which can inhibit the absorption of calcium, but also intravenous injection of ethylenediaminetetraacetic acid disodium salt, which can be combined with calcium to form a soluble complex, which can reduce the concentration of calcium in the blood. Patients with hypercalcemia crisis should seek medical treatment in time and follow the doctor’s instructions for medication. Patients should reduce calcium intake in their daily diet.