决明子是一味常用中药,是豆科一年生草本植物草决明的成熟种子,主产于安徽、四川、广西等省,秋季种子成熟时采收,洗净晒干备用。决明子甘苦微寒,既能清肝益肾、祛风明目,又能宣散风热,自古为眼科常用之要药,其得名就是以其有明目之功。临床凡肝胆郁热、风热外袭所致的头痛目赤 Cassia is a commonly used traditional Chinese medicine. It is a mature seed of Cassia obtusifolius, an annual herbaceous plant of the leguminous family. It is produced mainly in Anhui, Sichuan, and Guangxi, and is harvested at the time of ripening in autumn, and is washed and dried for use. Cassia cassia is bitterly cold, not only can clear the liver and kidney, expelling wind and eyesight, but also spread wind and heat, since ancient times as a common eye medicine, its name is to have its own merit. Clinical symptoms of liver and gallbladder fever, wind and heat attack caused by headache