In general, 7-10 days clean after abortion is normal. After abortion, the blood in the uterine cavity and part of the meconium need a process to be discharged out of the body through their own activities and uterine contraction. If the mouth of the uterus is closed for more than 10 days, even if the blood in the uterine cavity is difficult to be discharged, it is easy to have continuous bleeding for a long period of time, which will cause infection and endometritis, and also cause adhesions in the uterine cavity. In addition, the accumulation of blood in the uterine cavity, meconium in the uterine cavity for a long time to accumulate, will cause tissue mechanization, and again it is difficult to clear the uterus to remove the clean, the endometrium to cause more damage. Therefore, after abortion, if the bleeding is more than 10 days, you can go to the hospital in time to check the situation of the uterine cavity, there is stasis, residual timely removal, you can clear the uterus under hysteroscopy, ultrasound monitoring, which is conducive to a one-time removal, and give anti-inflammatory and uterine shrinkage treatment after the operation. After 7-10 days after the operation, the ultrasound should be rechecked again to know the condition of the uterus and the endometrium.