After childbirth, as the uterine meconium peels off, blood and necrotic meconium material are discharged through the vagina, and the tissue that is discharged is called malodor. Generally, the duration of nightmare is 4-6 weeks and the total amount of excretion is 250-500 ml. Because of the different duration, color and substances contained in nightmare, it can be divided into bloody nightmare, plasma nightmare and white nightmare. 1. The amount of malodorous fluid is relatively large and sometimes small blood clots can be observed, usually lasting 3-4 days; 2. It usually lasts about 3 weeks. If the duration of nightmare is prolonged and the amount of discharge is increased, it indicates that the uterus may be poorly recovered, there are fetal membranes and placental residues in the uterine cavity, etc. You should consult a doctor in time and seek reasonable treatment under the guidance of a doctor. If you do not pay attention to cleaning the malodex, infection may occur. Therefore, women should pay attention to perineal cleanliness, maintain personal hygiene and refrain from intercourse as much as possible during the puerperium.