临床资料1病例选择:有外阴刺激症状(烧灼感、瘙痒)主要是稀薄的泡沫状白带增多及外阴瘙痒,若有细菌混合感染则排出物呈脓性,有臭味;检查时可见阴道黏膜充血,重者有散在出血点,后穹窿白带多;如为滴虫者,阴道黏膜可无异常发现;悬滴镜检滴虫阳性的就诊者。排除标准:①妊娠期、哺乳 Clinical data 1 case selection: a vulvar irritation (burning, itching) is mainly a thin foamy leucorrhea and genital itching, if mixed bacterial infection was purulent discharge, stink; check visible vaginal mucosal congestion , Severe cases of scattered bleeding point, after vault vaginal discharge and more; such as trichomoniasis, vaginal mucosa can be found no abnormalities; Trichomonas vaginalis positive patients. Exclusion criteria: ① pregnancy, breast-feeding