If the vaginal discharge has a fishy odor, the majority of cases are due to bacterial vaginosis caused by anaerobic bacterial infections. In this case, you can douche the vagina with 10% of cleanser and then insert metronidazole pessary or ornidazole pessary in the vagina for 7 days. The fishy smell usually disappears after stopping the medication. If the symptoms do not go away, it is recommended to go to the hospital for routine leucorrhea examination and, if necessary, for mycoplasma and chlamydia, so that targeted treatment can be given according to the pathogens of the infection. It is also recommended to have annual cervical cancer screening, mainly to rule out cervical epithelial lesions and whether there is high-risk HPV infection in the cervix. In this way, early screening, early detection and early treatment can be achieved.