Uterine infection during pregnancy is clinically known as intrauterine infection during pregnancy, and should be diagnosed mainly by combining the results of symptoms and signs, blood tests and amniocentesis: 1. symptoms and signs: pregnant women with intrauterine infection usually have abdominal pain, fever, vaginal bleeding, increased vaginal discharge with odor, pressure pain in the uterine area, tachycardia and other symptoms; 2. blood tests: blood tests usually show increased white blood cell count, neutrophil elevation, leftward nuclear shift and other common signs of infection. Blood tests generally show increased white blood cell count, elevated neutrophils, leftward nuclear shift, and other common infections. In addition, it should be noted that if infection is found during maternal blood tests for pathogens and antibodies, ultrasonography should be performed to observe whether the fetus is developing normally; 3. If the results of amniotic fluid leukocyte assay, blood C-reactive protein assay, calcitoninogen test and other tests are abnormal, the diagnosis can also be clarified. It is recommended that pregnant women should pay attention to perineal hygiene during pregnancy and avoid sexual intercourse as much as possible to avoid retrograde infection of the uterine cavity by pathogenic bacteria. Intrauterine infections should be treated promptly when detected because recent obstetrics has found that intrauterine infections are the main cause of fetal membrane rupture and may lead to fetal brain damage. Usually the pregnancy should be terminated as early as possible after diagnosis and a vaginal delivery or cesarean section should be performed.