The difference between complete and incomplete miscarriage mainly lies in whether the pregnancy tissue is completely expelled or not. Complete miscarriage refers to the complete expulsion of pregnancy tissue, pregnant women bleeding, abdominal pain and other symptoms, the uterine lining shed more, discharged intact gestational sac, ultrasound examination of the uterine cavity without residual. Incomplete abortion refers to the pregnancy tissue is not completely discharged from the body, pregnant women experience intermittent vaginal bleeding, lasting longer, some pregnant women discharge a large amount of pregnancy tissue, but some pregnant women only discharge a small amount of pregnancy tissue, ultrasound examination still exists in the uterine cavity residue. After abortion, rest should be paid attention to, regular review, avoid overwork and prohibit pelvic bathing. If there is incomplete abortion, it is recommended to go to the hospital in time for purging treatment.