Dopamine is administered intravenously or intravenously by drip at a dose related to the purpose of administration and body weight, e.g., when used for shock syndrome, it is administered intravenously or by drip at a dose of 1 to 5 μg/kg/minute. Dopamine can be used to rescue shock syndrome caused by infarction, trauma, heart failure, renal failure, sepsis and so on. Its usage is intravenous injection or intravenous drip. Intravenous infusion is started at 1-5 μg/kg/minute of body weight, and is increased at a rate of 1-4 μg/kg/minute over 10 minutes until optimal efficacy is achieved. In intravenous infusion, for chronic refractory heart failure, treatment at 1 to 3 μg/kg/minute is usually effective. For occlusive vascular lesions, start at 1 μg/kg/minute and increase to 20 μg/kg/minute. For critically ill patients, start the drip at 5 μg/kg/min and gradually increase to 20-50 μg/kg/min. Dopamine may cause chest pain, dyspnea, cardiac arrhythmia and other adverse reactions, prohibited in patients with pheochromocytoma. For the use of shock patients need to be evaluated and guided by a professional physician, after the use of the drug to pay attention to the observation of the patient’s vital signs and the occurrence of adverse reactions.