High parathyroid hormone is mainly caused by primary hyperparathyroidism, secondary hyperparathyroidism, ectopic hyperparathyroidism, and the primary disease should be treated when high parathyroid hormone occurs. 1. Primary hyperparathyroidism: parathyroid hyperplasia, parathyroid adenoma, parathyroid carcinoma lead to over secretion of parathyroid hormone. Usually, it is necessary to do CT to find out the exact location of the lesion, and then remove the lesion through surgical treatment. Since parathyroid hormone has the effect of raising blood calcium, blood calcium should be controlled before surgery. 2. Secondary hyperparathyroidism: patients with chronic renal insufficiency have low calcium and high phosphorus in the middle and late stages of the disease, which will stimulate the parathyroid glands to secrete parathyroid hormone in order to raise blood calcium, and the treatment can be directed at the primary disease. Vitamin D deficiency or absorption disorders can also lead to high parathyroid hormone, and vitamin D supplementation is needed at this time. 3. Ectopic hyperparathyroidism: usually caused by malignant tumors of lungs, kidneys, liver, ovaries and pancreas, etc. The tumors lead to the secretion of parathyroid hormone-like polypeptide substances, resulting in excessive secretion of parathyroid hormone, and at this time, we should take the treatment of lowering the blood calcium, such as reducing the calcium-containing foods, etc., and the main treatment for the malignant tumor of the primary disease. If you have high parathyroid hormone, you should go to the regular hospital in time and get treatment under the doctor’s guidance.