The cause of clean and brown mucus may be caused by intrauterine infection, vaginitis, etc. It is best to examine the secretions in time, and ultrasound is also recommended. If there is infection, it is best to take amoxicillin or metronidazole in time, and it is recommended to pay attention to hygiene and avoid sexual life. In addition, it is recommended to pay attention to hygiene and avoid sexual intercourse, etc. Also, it is recommended to pay attention to the fact that malignant dew usually disappears 4-6 weeks after delivery, but sometimes a small amount of brown dew may last until the first menstrual flow after delivery. Pay attention to hygiene, it is best to change your underwear, pay attention to eating more vegetables and fruits, do not eat spicy and stimulating food, it is recommended to pay attention to get enough sleep, it is best not to exercise strenuously.