1, infection: abortion increases the chance of bacterial infection, which can cause endometritis or pelvic inflammatory disease, if the reproductive system originally has inflammation, it will make the inflammation spread, the condition is aggravated, once suffering from tubal inflammation, the lumen becomes narrow, the tubal mucosa is damaged or even the lumen is blocked, it is difficult to have children again as desired; 2, cervical and uterine cavity adhesions: in the abortion process there is a possibility of damage to the cervical canal and the endometrium, subsequently causing Cervical adhesion blockage or cervical adhesion reduction, so that sperm can not enter the uterine cavity through the cervical canal, or so that the fertilized egg can not be bedded and developed; 3, endometriosis or injury: abortion negative pressure suction uterine pressure suddenly reduced, can make the endometrial tissue reverse into the pelvis, the development of endometriosis, abortion endometrial injury or inflammation, the occurrence of placental adhesion, implantation, anterior and other abnormalities, induced prenatal or The chances of prenatal or postpartum hemorrhage, premature birth, stillbirth, stillbirth, postpartum infection are also significantly higher than in ordinary maternity; 4, amenorrhea and even infertility: endometrial basal layer damage will be cavity adhesions menstrual reduction or even amenorrhea; in addition, abortion causes tension, fear of psychological, so that the body endocrine disorders, can also cause menstrual disorders and even amenorrhea.