After removing the balloon, it is necessary to observe whether there is any vaginal bleeding, observe vaginal discharge and menstruation. 1. Observe whether there is vaginal bleeding: if the balloon is placed to compress the uterine cavity to stop bleeding, then after removing the balloon, we should pay attention to observe whether there is still bleeding. If the amount of bleeding after removing the balloon is relatively small, it means that it is normal. If the amount of bleeding is large, it means that there is a large damage and you should take sufficient rest to promote healing. 2. Observe the vaginal secretion: after the balloon is removed, pay attention to observe the vaginal secretion. If the vaginal secretion increases in volume, changes in character and is accompanied by lower abdominal pain, uterine cavity infection should be considered. 3. Observe menstruation: menstruation reflects the condition of the uterine lining, if the amount of menstruation is comparable to the normal amount of menstruation, it means that the uterine lining has recovered well; if the amount of menstruation is significantly reduced, it means that the uterine lining has recovered poorly. In addition, after removing the balloon, you should also pay attention to vulvar cleanliness, and avoid sitz baths and pelvic baths to prevent uterine infections. After hysteroscopic surgery, you should go to the hospital regularly for review according to the doctor’s advice and take medication as prescribed by the doctor. If any of the above symptoms occur, you should consult the doctor in time to avoid delaying your condition.