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