Salmon calcitonin, mainly through the regulation of bone, kidney and gastrointestinal tract to lower blood calcium, treatment of deformational osteitis can lead to relief of bone pain. It is used to treat hypercalcemia caused by vitamin D toxicity of various causes, parathyroid cancer, thyroid and hyperparathyroidism, etc. It is more effective in patients with accelerated bone renewal. It is used for osteoporosis caused by impaired calcium absorption in old age or menopause, and is effective with corticosteroid-induced osteoporosis. It can directly inhibit the secretion of gastric acid and gastrin by stomach wall cells, which has therapeutic effects on gastroduodenal ulcer and acute pancreatitis, and is also used for pain caused by tumor bone metastasis.