Leukocyte cleanliness degree III having a painless abortion can easily lead to pelvic inflammatory disease caused by rising pathogens in the lower genital tract. Leukocyte cleanliness degree III indicates mild vaginitis, when the flora is imbalanced and certain bacteria are overgrown and in a pathogenic state. After the abortion, the body is weak and the resistance is reduced, so the pathogens in the vagina are prone to rise and infect the pelvic cavity, which can lead to inflammation. Patients should pay attention to their physical condition. If symptoms such as lower abdominal pain, fever, irregular vaginal bleeding and abnormal color and nature of leukorrhea occur, the possibility of post-operative infection should be considered. In this case, the patient should immediately go to the gynecology department of the hospital and take oral antibiotic treatment, such as metronidazole, under the guidance of a professional doctor. If the infection is more serious, hospitalization is required to avoid further infection. After miscarriage surgery, patients should pay attention to a diversified diet and can eat more nutritious foods, such as pork liver, fish and lean meat. In addition, eat more fresh fruits and vegetables, such as kiwi and oranges, to replenish the body with trace elements. Avoid irregular work and rest, go to bed early and wake up early, exercise moderately, and combine work and rest; forbid intercourse, tub bathing, swimming and hot springs to avoid cross-infection.