Add it into water for injection, inject it subcutaneously or intramuscularly, and use it under the guidance of a doctor. Osteoporosis: once a day, each time 10-20μg or 20μg every other day according to the severity of the disease. In order to prevent the progressive loss of bone, calcium and vitamin D should be properly ingested according to individual needs. Hypercalcemia: per kilogram of body weight 1-2μg per day, subcutaneous or intramuscular injection 1-2 times. The treatment plan should be adjusted according to the clinical and biochemical reactions of patients. If the injection dose exceeds 2ml, it should be injected in multiple times. Osteoarthritis deformans: 20μg daily or every other day. Painful malnutrition: early diagnosis is very important, and once diagnosed, it should be treated as soon as possible. Inject 20μg subcutaneously or intramuscularly every day for 2~4 weeks; Then three times a week, 20μg each time, lasting more than 6 weeks; It depends on the patient's reaction.