High parathyroid hormone is mostly caused by hyperparathyroidism, which may require lowering the parathyroid hormone level by taking calcium and vitamin D under the supervision of a doctor, and may require surgical treatment to lower the parathyroid hormone level if necessary. Patients with secondary hyperparathyroidism mostly have elevated parathyroid hormone due to renal insufficiency. In this case, the main concern is to treat the renal insufficiency, and in addition, calcium and active vitamin D supplementation are the mainstay to reduce parathyroid hormone levels. Patients with primary hyperparathyroidism have significantly elevated levels of parathyroid hormone and elevated blood calcium levels, in which case surgical treatment may be required to lower parathyroid hormone levels. It is recommended that patients with high parathyroid hormone levels go to a regular hospital in time, complete the relevant examinations to clarify the cause of the disease, and standardize the treatment under the guidance of the doctor, so as to avoid delays in the condition.