Clinically, in the case of a normal labor, the vast majority of bloody discharge will be completely clean within 9 days, followed by plasma discharge and then white discharge. All of the diarrhea will be completely clean in about 40 days after delivery. If the bloody discharge is already almost clean and then appears bright red, clinically it may be caused by the following reasons: First, eating something that should not be eaten in the diet, for example, often some people use wine to stew some stews as tonic to eat after giving birth, and there may be fresh bleeding again. Secondly, poor rest and fatigue, resulting in poor uterine recuperation and fresh bleeding. Third, there are residual conditions in the uterus, such as residual placenta or residual fetal membranes, which may cause this kind of fresh blood, and if necessary, the diagnosis can be confirmed by ultrasound examination.