Adalimumab injection can be used for the treatment of rheumatoid arthritis, ankylosing spondylitis and other diseases, the specific dosage according to the patient’s specific type of disease and the condition of the different and there is a big difference, can not be generalized, and need to comply with the doctor’s instructions for use. 1. The common specification of adalimumab injection is 40mg/0.8ml, which can be used for the treatment of rheumatoid arthritis, ankylosing spondylitis, psoriasis, Crohn’s disease, etc. The specific dosage varies according to the type of the disease and the condition of the patient, so it is not possible to make a generalization. 2. For adult patients with rheumatoid arthritis and ankylosing spondylitis, the recommended dosage is 40 mg of adalimumab, administered as a single dose by subcutaneous injection once every two weeks, and methotrexate should be continued. 3. In adult patients with psoriasis, the recommended dosage is 80 mg by first subcutaneous injection, followed by 40 mg by subcutaneous injection every two weeks beginning one week after the first dose. Drugs should be used under the guidance of physicians with relevant experience in diagnosis and treatment of diseases, it is recommended that patients who need to inject adalimumab injection to the rheumatology and immunology department of regular hospitals and related departments for consultation, do not self-medication.