Itchy lower body after delivery may be caused by trichomonas vaginalis, bacterial vaginitis, vulvovaginal pseudomonal yeast disease, local irritation, etc. The cause should be clarified and treated for the cause. First, local stimulation of postpartum outflow of malodorous dew can not be cleaned up in time, which may cause local irritation and cause itching of dermatitis. Patients should clean up the dew in time and keep the perineum dry and clean. 2. Vaginal inflammation 1. Trichomonas vaginalis: When the mother is infected by Trichomonas vaginalis, it may cause trichomonas vaginalis, with symptoms such as vulvar itching and increased vaginal discharge, or burning, pain and painful intercourse. The vaginal discharge is typically thin, purulent, foamy, odorous and grayish yellow in color. The symptoms can be relieved by cleaning the vulva with potassium permanganate water and using metronidazole tablets locally in the vagina every night as prescribed by the doctor; 3. Some patients have symptoms such as burning pain in the vulva, painful intercourse and painful urination. In this case, the patient can be treated with nifurtimox suppositories as prescribed by the doctor, which are administered vaginally and do not affect breastfeeding. After delivery, you should pay attention to personal hygiene, wash your vulva regularly, change your underwear regularly, and use sanitary napkins with good breathability and strong water-absorbing capacity to relieve discomfort.