Professor You Zhaoling considers that stagnated heat, toxin, qi deficiency are the fundamental reasons of uterus incision lacuna. The way of TCM syndrome differentiation and treatment in clinical practice is mainly divided into three steps:the non menstrual period to "cleaning uterus", the premenstrual period to "forcing uterus", the delayed menstrual period to "contracting uterus". The "three steps" has the significant ...