Indolent abortion is mostly manifested as menopause, disappearance of early pregnancy reaction and abdominal pain, which are manifested in the following aspects: 1. Menopause and disappearance of early pregnancy reaction: there can be symptoms such as pre-eclampsia miscarriage in the first period, and later the uterus of the patient no longer increases with the increase of pregnancy month, but shrinks. If in the middle of pregnancy, the pregnant woman does not feel the increase of abdomen, no fetal movement, gynecological examination of the patient’s cervix is closed, but the number of weeks of menopause is relatively small, the texture is not soft, while no fetal heart is heard; 2, abdominal pain: early clots stimulate uterine contractions in the form of persistent lower abdominal pain, late miscarriage when the patient first has paroxysmal uterine contractions before the abruption of the placenta.