艾叶为菊科多年生草本植物艾的叶片。入药用以蕲州产者为佳,故又名蕲艾。《荆楚岁时记》上讲,艾叶以“五月五日鸡未鸣时采集(的)最好”。《孟子·离娄章》也说:“七年之病,求三年之艾”“陈久(者)方可用”,所以又称之为“陈艾”。艾叶芳香,性味苦、辛、温,具有散寒除湿、温经止 The leaves are the leaves of the Aedes perennial herb Ai. It is better to use medicines to produce in Quzhou. In “Jing Chu Shuo Shi Ji”, Ai Ye stated that “the best thing was collected when the chicken was not heard on May 5.” “Mencius” also said: “Seven years of disease, seeking three years of Ai” “Chen Jiu (person) is available”, it is also known as “Chen Ai.” Leaves aromatic, bitter, spicy, warm, with cold and dampness, warm circulation