Dexamethasone tablets have anti-inflammatory, anti-allergic, anti-shock, and immunosuppressive properties to treat allergic and autoimmune inflammatory diseases. It can cause side effects such as obesity, hypertension, diabetes, and gastrointestinal damage. Dexamethasone tablets belong to the adrenocorticotropic hormone class of drugs, which can inhibit the abnormal immunopathological response and reduce the systemic inflammatory response, and can be used to treat a variety of diseases. Common diseases such as connective tissue disease, severe bronchial asthma, atopic dermatitis, acute leukemia, malignant lymphoma and other diseases can be selected dexamethasone tablets for treatment. Long-term use of large amounts of dexamethasone tablets are prone to Cushing’s syndrome (such as full moon face, buffalo back, etc.), hypertension, diabetes, osteoporosis, peptic ulcers, slow wound healing, etc., but also to the hypothalamus – pituitary – adrenal axis inhibitory effect on the human stress response, mood, etc., and complications of infection is also one of the more common adverse reactions. Therefore, it is generally contraindicated in patients with hypertension, thrombosis, peptic ulcer, electrolyte metabolism abnormalities, myocardial infarction, visceral surgery, glaucoma, etc.; patients with tuberculosis, acute bacterial or viral infections should use it with caution, and weigh the pros and cons of using it when necessary; patients with diabetes, osteoporosis, hypothyroidism, renal insufficiency, etc. should use it with caution. Note that after long-term use of the drug, the need to gradually reduce the drug, not suddenly stop. This drug is contraindicated in people with a history of allergy to adrenocorticotropic hormone drugs. Dexamethasone tablets need to be standardized under the guidance of a professional physician, do not self-medication.