To determine the prevalence of trichomoniasis in Sirjan city, the vaginal discharges of 500 women were examined by direct smear and culture methods from June to December 1992. ( Two hundred thirty women referred to vali-asr polyclinic and 270 to the health center number 3). The mean age of the women was 30 years and a higher percentage of referrals were between 30-34 years. In respect to the occupation and education of the subjects, most of them were housewives and school educated (2.8℅ and 3.5℅ were infected, respectively). There was no significant difference between age, occupation, income, husband's occupation, contraceptives methods, dyspareunia, vaginalis, cervicitis, frequency, antibiotics usage, and vaginal pH with trichomoniasis. On the contrary, husband's education, and quantity of vaginal discharge had significant relations with the disease. Overall prevalence of trichomonas vaginalis was 2.8℅ by culture and 2.2 by direct smear method. The sensitivity of direct smear compared with the culture method was 78℅ . The prevalence of trichomoniasis among the women was 3.5℅ and 2.2℅ in Vali- asr polyclinic and health center, respectively. However, there was no significant difference between the two groups.