Epinephrine is a drug commonly used in clinical emergencies, epinephrine this drug for the treatment of diseases mainly in the following areas: First, epinephrine can treat shock and other diseases, when patients in shock will appear when the blood pressure drops, heart rate slows down, respiratory distress and other symptoms endanger the lives of patients, and epinephrine has a contraction of peripheral blood vessels, and at the same time can increase the heart rate, effectively relieve shock on people The harm caused by shock. Second, epinephrine can treat asthma, asthma attack patients will have difficulty breathing, and even endanger the lives of patients because of respiratory failure. Epinephrine can effectively promote the relief of bronchospasm, and at the same time can increase alveolar gas exchange, which can effectively improve the ischemic condition caused by asthma, so epinephrine has a very good effect in the treatment of asthma.