There are many reasons why the nightmare is yellow, it may be normal and usually does not require treatment, or it may be caused by endometritis, puerperal infection, inflammation of the vaginal area, which requires medication or surgery. 1, normal: the yellow color of the nightmare is mainly caused by a change in composition, yellow nightmare is mainly a plasma discharge, also known as plasma nightmare, which usually occurs about 10 days after delivery. 2, endometritis, vaginitis: inflammatory stimulation will cause yellow color of the nightmare, but also accompanied by foul odor, and in the prenatal period there will be signs of infection in the uterine cavity. It is necessary to apply anti-inflammatory drugs for treatment, pay attention to temperature changes, and pay attention to vulva cleanliness, wash perineum with warm water daily; 3, puerperal infection: if the color of malodorous fluid is yellow and serious, purulent or yellow pus nasal-like changes, and accompanied by varying degrees of lower abdominal pain, may be caused by puerperal infection, treatment should be given in sufficient quantity, effective antibiotics to control infection, such as cephalosporins, amoxicillin If an abscess appears, surgical incision and drainage can be applied.