Atropine is an anticholinergic, an M-blocker, which is an abscopaline extracted from the Solanaceae plant, which is also known by the alias Atropine Sulfate. The main effect of atropine is to inhibit the inhibition of the heart by the vagus nerve, to release smooth muscle spasm, to release small blood vessel spasm and to inhibit glandular secretion. It is mostly used for the following diseases: 1. organophosphorus poisoning, organophosphorus poisoning, high doses of atropine can dilate the pupils and rescue organophosphorus poisoning. 2. used to relieve visceral colic, such as gastrointestinal spasm and colic, renal colic, biliary colic. 3. used for sinus bradycardia or atrioventricular block, with atropine can make the heart rate increase. 4. used in ophthalmology, because it mainly has the effect of pupil dilation.