Glucocorticoids are an extremely important class of regulatory molecules in the body and play an important role in regulating the growth, development, metabolism and immune function of the body. Glucocorticoids have a wide range of effects, including anti-inflammatory, anti-allergic, anti-shock, anti-rheumatic, and immunosuppressive effects. In short, glucocorticoids have a wide range of effects and are widely used in clinical practice. For example, they are indicated for allergic or autoimmune inflammatory diseases, for rheumatic diseases such as lupus erythematosus, severe bronchial asthma, dermatomyositis, vasculitis and other allergic diseases. Like acute leukemia, malignant lymphoma, among chemotherapy applications. Life-threatening diseases, such as shock. In conclusion, glucocorticosteroids are widely used clinically, but they have certain side effects, so it is necessary to master the indications and side effects in order to make the best use of glucocorticosteroids.