The appearance of white dew in normal women after childbirth proves that there is less exudate in the uterine cavity and red dew, mainly due to the following reasons: First, it may be due to abdominal cold, eating cold food or abnormalities caused by exertion or mental and emotional irritability, so that the endometrium is more exfoliated and red dew will appear. Secondly, if women take drugs to activate blood stasis, such as motherwort granules, Gui Zhi Fu Ling capsule, or give pelvic heat compresses, physiotherapy and other treatments to speed up pelvic blood circulation, it may also lead to uterine bleeding and poor uterine regeneration, resulting in bloody malacia. Women should pay attention to proper rest and warmth after delivery, keep their mood relaxed, do not eat cold food, and do not take drugs that activate blood circulation to avoid affecting uterine regeneration.