Dopamine is an antihypertensive drug that is commonly used clinically in the resuscitation of critically ill patients. Its use can increase cardiac output and help improve the symptoms of hypotension, but it needs to be used strictly under the guidance of a doctor. Dopamine helps to promote brain excitation and regulate human blood pressure, and is an antihypertensive drug, which is often used in the resuscitation of shock patients and critically ill patients. Moderate doses of dobutamine can increase myocardial contractility and increase cardiac output, as well as dilate cerebral blood vessels and increase blood flow. If the symptoms of hypotension are severe, high doses of dopamine can increase vascular resistance, which helps the renal vasculature to contract and elevate its own systolic as well as diastolic blood pressure. Although dobutamine can be used to elevate blood pressure, if used in excess or blindly, it may also cause cardiac arrhythmias and chest pain, and in severe cases may induce respiratory distress, which is detrimental to recovery. It should be noted that dobutamine may cause some adverse reactions in the body and should be used at the appropriate dose under the guidance of a physician.