If there is still vaginal bleeding for more than 10 days, an ultrasound should be performed in time to understand the condition of the uterine cavity and whether there is stasis or residue. If there is, it is recommended to perform ultrasound to remove the stagnant blood and residues in the uterine cavity to facilitate the recovery of the uterus, and to give routine anti-inflammatory treatment after the operation. Postoperative precautions: one month ban on intercourse and bathing; ban on cold, spicy and stimulating food; eat nutritious food; keep the vulva clean and hygienic. Generally, ultrasound examination is performed 7 days after menstruation to understand the recovery of the uterus.