Most of the time, yellow and red nightmares are normal. Normally, the bloody nightmare will last for about two weeks after delivery, and after two weeks, the bloody nightmare will turn into plasma nightmare, with a yellow and sticky discharge. When there is yellow and red nightmare, accompanied by vulvar itching, odor and discomfort in the lower abdomen, it should be considered that there is residual infection in the uterine cavity. The doctor will apply antibiotics to control the infection and perform the operation to remove the uterus. Within one month after the operation, sexual intercourse is prohibited, pay attention to rest, ensure regular rest and rest, strengthen nutrition and avoid spicy and stimulating food. The first thing you should do is to keep your vulva dry and tidy during the malignant period. Wash your vulva every day after delivery and change your underwear in time. Secondly, it is important to get out of bed properly and not to stay in bed for a long time after delivery, as getting out of bed will also help the discharge of the dew. Finally, you should observe the nature of the dew, and if there is any change in the nature of the dew, you should have a timely examination.