Dopamine is a neurotransmitter in the human body, a chemical that helps the body’s cells to transmit impulses and is a nerve transmitting substance, which is mostly used clinically in first aid and resuscitation. There also exists a dopamine injectable medication used to treat conditions such as shock and low blood pressure. Dopamine has the role of regulating the function of the nervous system, transmitting nerve signals, and is involved in the transmission of various messages, so it can regulate emotions, and when the body’s dopamine secretion is low, it will be easy to feel cursed, fatigue, and so on. Small doses of dopamine and diuretics used together, the action of dopamine receptors, can help vasodilatation, increase the amount of urine and sodium excretion, improve renal function; small to medium doses of dopamine can promote the secretion of adrenaline, contraction of the heart muscle to increase the amount of heartbeat; large doses of dopamine will constrict the renal vasculature, reduce the renal blood flow and the amount of urine. Dopamine medication should be very precise about the dosage, must be based on the patient’s specific situation under the supervision and guidance of a doctor.