The invention relates to the field of medicines for treating gynecologic diseases, particularly a washing liquid for treating gynecologic diseases, which is prepared by decocting pharmaceutical components with water. The pharmaceutical components comprise the following drugs in parts by weight: 0.5-3 parts of coptis, 2-6 parts of kuh-seng, 1.5-5 parts of phellodendron bark, 1-4 parts of cnidium fruit, 0.5-3 parts of pepper and 0.5-3 parts of stemona. Compared with like gynecologic washing liquid products for external use, the washing liquid for treating gynecologic diseases has the advantagesof good curative effect and wide application range, and has 100% bacteriostatic action on pathogenic microbes, such as Staphylococcus aureus, Escherichia coli, Candida albicans and the like. After being used for along time, the washing liquid provided by the invention can not influence the self-cleaning and defensive capabilities of female vaginas, and has favorable curative effect for gynecologic inflammation.