It is not true that there is no toxin in the uterine cavity of women, only the periodic proliferation and peeling of the endometrium, which will occur naturally after the menstruation due to the decline of the hormone level in the body, without the use of any plugging pills for detoxification, there is no scientific basis for the claim. The uterus is an internal genital organ and the cervix is in the deepest part of the vagina, so there is no way for women to insert pills into the uterine cavity. If women take special means to insert drugs into the uterine cavity, it may cause pathogenic bacteria to infect the uterine cavity and lead to endometrial inflammation and persistent pain in the lower abdomen, regardless of whether the woman has uterine inflammation or endometrial polyps or fibroids, there is no need for intrauterine insertion.