If a woman usually has no stomach pain and her menstrual blood is discharged smoothly when she has her period, but after the abortion, she has stomach pain on her first period and her menstrual blood does not come out at all, and the ultrasound examination reveals obvious stagnation of menstrual blood in the cervical canal, it is considered to be caused by cervical adhesions, which are usually caused by obvious inflammatory stimulation in the cervical canal after the abortion. Therefore, a cervical adhesion separation procedure should be performed as soon as possible to drain the menstrual flow. If a woman has been experiencing pain in the stomach since the onset of menstruation, and there is also poor discharge of menstrual blood, it is considered to be caused by cervical canal stenosis or severe retroflexion of the uterus, and the pain relief effect of painkillers is not effective.