地黄,是玄参科植物地黄的干燥根茎。将新鲜地黄晒干就叫生地,而将生地以砂仁、陈皮和酒为辅料,经反复蒸晒,使地黄内外色黑、油润、质地柔软黏腻时就叫熟地。生地,味甘而性苦寒,具有清热凉血、养阴生津、润肠通便的功能,常用于热病伤阴、津液未复、心焦烦热、潮热骨蒸、颧红盗汗、热病动血、口干舌燥、烦渴引饮、肠燥便秘等病症的治疗。临床常用的益胃汤、犀角地黄汤、血府逐淤汤、增液汤、增 Rehmannia glutinosa is a dried rhizome of Scrophulariaceae plant Rehmannia glutinosa. Fresh yellow dried in the sun will be called habitat, and the habitat with Amomum, dried tangerine peel and wine as accessories, repeated steaming, so that the color of black and yellow inside and outside the oil, soft, soft and sticky texture called rehmannia. Natural, sweet and bitter cold, with heat and cooling blood, Yang Yin Sheng Jin, laxative function, often used to heat the wound yin, body fluid is not restored, heart Jiao Fan, hot flashes bone steaming, blush, night sweats, fever Blood pressure, dry mouth, dull thirst cited drinking, intestinal dry constipation and other symptoms of treatment. Commonly used in the clinical Yiwei Decoction, Rhino Di Huang Decoction, Xue Fu Zhu Ye Decoction, Jian Ye Decoction, increase