This invention discloses uses for levonorgestrel in preparing anti-ovarian cancer products. This invention provides uses for levonorgestrel in the preparation of products to treat ovarian cancer. From carrying out cancer drug repositioning for the FDA- and CFDA-approved drug levonorgestrel, experiments for this invention show, based on screening of non-anti-cancer drugs for various cancer cell lines (tissue types) and mutation sites, that levonorgestrel has a new use as an anti-ovarian cancer medication, thus achieving a new purpose for an old drug.
