Hyperparathyroidism is hyperparathyroidism. Secondary hyperparathyroidism is due to hypocalcemia from various causes, which stimulates the parathyroid glands to compensatingly secrete excess parathyroid hormone, and may be more severe in vitamin D deficiency, renal insufficiency, osteochondrosis, and small bowel malabsorption, which are common. In patients with simple vitamin D deficiency, only moderate vitamin D supplementation is usually needed to correct blood calcium and phosphorus abnormalities. In cases of hypophosphatemia and impaired vitamin D metabolism due to renal tubular pathology, neutral phosphate supplementation and combined application of vitamin D are appropriate. In chronic renal insufficiency or failure, oral aluminum hydroxide or aluminum carbonate can bind a large amount of inorganic phosphorus, which can effectively reduce the absorption of phosphorus; oral calcium salts or increase the calcium content of dialysis fluid to supplement calcium deficiency and inhibit parathyroid secretion. Patients with secondary hyperparathyroidism are advised to go to the endocrinology department of regular hospitals for further relevant examinations and treatment.