发汗解表药是治疗表证的一类药物 ,它主要是运用具有发汗解表功能的药物组成方剂 ,用来开泄腠理 ,扩张汗腺 ,通过发汗来祛邪外出 ,解除表证。表证是指病邪在肌表 ,其主要临床症状是恶寒、发热、头痛、脉浮 ,多属现代医学上呼吸道感染及某些传染病的初期。按祖国医学理论 ,表证 Sweating solution is a class of drugs for the treatment of symptoms, it is mainly the use of drugs with sweating composition of the composition of the prescription, used to vent the truth, expand the sweat glands, through the sweat to escape evil, to relieve the evidence. The epiphenomenon refers to the evils on the muscle surface, the main clinical symptoms of which are chills, fever, headaches, and pulse floating, mostly in the early stages of modern medical upper respiratory tract infections and certain infectious diseases. According to the medical theory of the motherland,