Emergency drugs usually include respiratory stimulants, epinephrine-like drugs, hypotensive drugs, antiarrhythmics, diuretics, adrenocorticosteroids, hemostatic drugs, analgesics, etc. Note that emergency drugs can affect vital signs. Note that all emergency drugs can affect vital signs, do not use them privately without the guidance of a doctor. 1, respiratory stimulants: such as Niclosamide, Lopressor, etc., can be used to rescue a variety of acute and critical illnesses, or respiratory failure caused by central respiratory depression. But now the clinical application is less, but more mechanical ventilation alternative treatment; 2, adrenaline-like drugs: divided into alpha agonists, beta agonists, such as norepinephrine, m-hydroxylamine, isoprenaline, dobutamine, dopamine, epinephrine, etc., generally used to rescue shock, heart failure, atrioventricular block and other diseases; 3, hypotensive drugs: such as calcium antagonists, including nifedipine, nicardipine 3, hypotensive drugs: such as calcium antagonists, including nifedipine, nicardipine, diltiazem, etc.; angiotensin-converting enzyme inhibitors, including captopril; beta-blockers, including metoprolol; vasodilators, including sodium nitroprusside, mainly used to lower blood pressure and control heart failure; 4, anti-arrhythmic drugs: such as propafenone, esmolol, lidocaine, verapamil, amiodarone, etc., need to be under the guidance of a doctor, according to different reasons, choose the appropriate anti-arrhythmic drugs; 5, anti-arrhythmic drugs; 5, anti-arrhythmic drugs: such as propafenone, esmolol, lidocaine, verapamil, amiodarone, etc. arrhythmia drugs; 5. Diuretics: such as tab diuretics, including furosemide, torasemide, etc., which are more widely used in clinical practice. In addition, hydrochlorothiazide or spironolactone can also be used according to the patient’s condition; 6, adrenocorticotropic hormone: currently the common clinical use is methylprednisolone sodium succinate, generally used in various hematologic diseases or bronchial asthma, anaphylaxis and other cases; 7, hemostatic drugs: such as snake venom thrombin, human coagulation factor VIII, phenolsulfonamide, etc., the mechanism of action of hemostatic drugs is complex, need to choose according to the specific situation Application; 8, analgesics: such as morphine, pethidine, etc. are more commonly used, emergency, intensive care units also often choose fentanyl.