Pelvic infection, also known as pelvic inflammatory disease (PID), is a common disease in women and refers to a group of infectious diseases of the upper female genital tract (CDC2006) The main categories include endometritis salpingitis tubo-ovarian abscess (TOA) -ovarian abscess,TOA) Pelvic peritonitis (peritonitis) Pelvic infection – definition In the past, PID included acute pelvic inflammatory disease (APID) and chronic pelvic inflammatory disease (CPID) In recent years the Centers for Disease Control and Prevention (CDC) has concluded that the term chronic pelvic inflammatory disease is inappropriate and that bacterial culture results from the lesions show that the so-called chronic pelvic inflammatory disease reoccurrence is actually another episode of pelvic inflammatory disease. Nowadays, chronic pelvic inflammatory disease is mostly referred to as a complication or sequelae of acute pelvic inflammatory disease, so nowadays pelvic inflammatory disease mostly refers to acute pelvic inflammatory disease. The incidence of infertility: 20%-30% 2. ectopic pregnancy: 8-10 times the incidence of normal women 3. chronic pelvic pain: about 20% 4. recurrent pelvic inflammatory disease: about 25% will have another attack The common causative organisms of pelvic infection are mainly mixed infections. Currently, the causative agents in pelvic infections mainly include: 1, aerobic bacteria: Staphylococcus, Streptococcus, Escherichia coli 2, anaerobic bacteria: Streptococcus alginolyticus, Bacteroides fragilis, Clostridium perfringens 3, sexually transmitted pathogens: such as gonococcus, Chlamydia trachomatis, Mycoplasma solani PID treatment needs to cover the pathogens of mixed infections, initial treatment is often based on experience in the selection of antibiotics, timely antibiotic Treatment can avoid adverse sequelae, treatment early and reasonable application of antibiotics to cover the pathogens of mixed infections.