Painless removal of uterus can cause the following hazards, the first one is because painless removal of uterus requires anesthesia, so there is a possibility of causing anesthesia accidents, allergies, or even severe anaphylactic shock, clinically life-threatening. The second is that it may cause uterine perforation, because the operation is done in a completely unconscious situation, and clinically, if the uterus is relatively soft, it may lead to the possibility of uterine perforation. The third is that after the painless removal of the uterus, if you do not pay attention to rest, resistance to decline or premature sexual intercourse, there is a possibility of genital infection, such as chronic cervical inflammation or pelvic inflammatory disease caused by pain in the lower abdomen, increased vaginal discharge and other symptoms. The fourth is the endometrial damage caused by painless purging, which clinically leads to complete adhesion of the uterine cavity, or incomplete adhesion. It is necessary to do hysteroscopy to separate the adherent tissues, which may cause infertility in the clinic.