Experts from Zhengzhou Yuanda Hospital said that postpartum or post-abortion infection is a common cause of pelvic inflammatory disease. After delivery, the parturient is weak, the cervix is not closed in time due to residual blood and turbid fluid, there is a placental exfoliation surface in the uterine cavity, or the birth canal is damaged due to delivery, or there are placenta and fetal membranes left, or postpartum precocious puberty, and pathogens invade the uterine cavity, which is easy to cause infection; Post-abortion infection can occur when the vaginal bleeding time is too long or there is tissue residue in the uterine cavity during spontaneous abortion and drug abortion. Diseases are mostly caused by damp-heat pouring or invasion of damp-toxin, which leads to stagnation of qi and blood, dysfunction of zang-fu organs and damage of chong and ren. If the disease persists for a long time, qi and blood will stagnate for a long time, and adhesion and lumps will be formed if the meridians are blocked. As the "Women's Recipe" said, "If the blood stasis in a woman's abdomen persists for a long time, it is a scar." Dampness, toxin, heat and blood stasis are the main causes and pathogenesis of this disease, and blood stasis blocking collaterals is its pathological feature. Therefore, the treatment should focus on promoting blood circulation and removing blood stasis, supplemented by clearing away heat and toxic materials and promoting diuresis. Prescription: Radix Angelicae Sinensis, Rhizoma Cyperi, Radix Paeoniae Rubra, Radix Salviae Miltiorrhizae, Rhizoma Corydalis, Semen Persicae, Fructus Toosendan, Olibanum, Myrrha, Rhizoma Sparganii, Rhizoma Curcumae, promoting blood circulation, removing blood stasis, regulating qi and relieving pain; Caulis Sargentodoxae, Herba Patriniae, Herba Taraxaci, Rhizoma Smilacis Glabrae, Coicis Semen, Cortex Phellodendri, Radix Sophorae Flavescentis, clearing away heat and toxic materials, and promoting diuresis.