Ortho-kidney refers to norepinephrine, while parakidney refers to epinephrine. Ortho-renal and paranephrenal are the short names of these two drugs, which are not standardized and are rarely used nowadays. 1. Norepinephrine: it is a central excitatory drug, which mainly plays the role of raising blood pressure. Generally used for shock or myocardial infarction and lead to low blood pressure patients, can use norepinephrine to raise blood pressure. However, it should be noted that if norepinephrine is used for a long time, it may lead to necrosis of internal organs. 2. Epinephrine: epinephrine has the effect of excitation of heart muscle, mainly used in the rescue of cardiac arrest patients. It has the effect of diastolic bronchial tubes, and can also be used in patients with bronchial asthma as well as anaphylactic shock. Norepinephrine and epinephrine are prescription drugs, the indications for use and the dosage are strictly regulated, and need to be used by professional doctors according to the patient’s condition, not blindly. According to the patient’s condition to use, can not be used blindly.