Usually, hypercalcemia can be reduced by medication, surgery and hemodialysis. 1. Drug treatment: Calcitonin, furosemide and other drugs can be chosen. Calcitonin can inhibit bone resorption by interfering with the maturation of osteoclasts and increase renal calcium excretion, thus reducing blood calcium. 2. Surgery: If the above treatments are not effective, if it is considered to be caused by parathyroid pathology, it is necessary to actively use surgical treatment and conduct surgical exploration. If the hyperplasia of parathyroid glands in the neck or parathyroid adenoma is not relieved after removing the hypercalcemia, attention should be paid to exploring the mediastinum and removing the ectopic parathyroid tissues. 3. Hemodialysis: For patients with decreased renal function, it is recommended to go to the hospital for hemodialysis in time to help reduce the blood calcium level. Patients are advised to go to regular hospitals and follow the doctor’s instructions for treatment.