The yellowish mucus that follows malodex is usually divided into physiological and pathological phenomena. The physiological phenomenon usually does not require treatment. Pathological phenomena may mainly include trichomoniasis and chronic cervicitis, which can be judged by routine leucorrhea examination and clinical symptoms. The common causes and treatment methods are as follows: I. Physiological phenomena: If this yellow mucus appears near the end of white malaria, it may be caused by a very small amount of blood mixed in the uterine cavity, cervical or vaginal secretions. If it is not accompanied by other symptoms, such as odor and vulvar itching, it is a normal physiological phenomenon. Maternity usually should pay attention to maintain personal hygiene and cleanliness, keep the vulva clean and dry, and change and wash underwear regularly to avoid infection. Pathological phenomena: 1. Trichomonas vaginalis: If the mother suffers from vaginitis, thin, purulent, foamy, odorous discharge may appear, grayish yellow or yellowish white. It can be treated with drugs such as metronidazole under the guidance of a doctor and breast milk is suspended during the medication period. 2. Chronic cervicitis: If the mother has chronic cervicitis, she may have increased vaginal discharge, which is yellowish or purulent and may be accompanied by vulvar itching or discomfort. The treatment needs to be symptomatic according to the cause, for example, if it is chronic cervical canal mucositis, physical therapy can be taken, and if it is chronic cervicitis caused by cervical polyps, polyps removal should be performed.