654-2, also known as scopolamine hydrochloride, is commonly used in clinical practice to improve microcirculation and relieve smooth muscle spasm, and is clinically used to treat the following diseases: 1) gastrointestinal colic; 2) biliary tract spasm; 3) renal colic; 4) acute microcirculatory disorders, and cyanosis in critically ill patients with peripheral circulation disorders of the extremities, with better results when administered 2-3 days in advance; 5) organophosphorus poisoning rescue, and early The medication can significantly alleviate the toxic side effects. The specific medication should be combined with the clinical situation and guided by the doctor’s interview.