Green vaginal discharge is mainly considered as trichomoniasis and is treated mainly with metronidazole or tinidazole. Trichomonas vaginalis is a common vaginal inflammatory disease caused by Trichomonas vaginalis. The main pathogen is Trichomonas vaginalis, which thrives in a humid environment with a pH of 5.2-6.6. Most patients with this vaginitis often have bacterial vaginosis. Trichomonas vaginalis is mainly transmitted directly through sexual intercourse, but also indirectly through public places, clothing and instruments. The main symptoms are: 1. increased vaginal discharge, yellowish green, thin, purulent and foamy, with a foul odor; 2. itching of the vulva, possibly with burning, pain and painful intercourse. The above mentioned symptoms should be treated at the hospital in time, and the diagnosis should be clarified by the corresponding examination, and symptomatic treatment should be carried out, and the sexual partner should also be treated at the same time. Some patients may also experience headache, rash and other uncomfortable symptoms.