We conducted this study to analyze factors related to reproductive tract infections (RTIs) among female migrant workers (FMWs) in four industrial zones across four regions in Vietnam. A analytical cross-sectional study was implemented with FMWs aged between 18 and 49 year old in four industrial zones in Hanoi, Da Nang, Ho Chi Minh (HCM) city and Binh Duong, Vietnam. Stratified sampling was used to select about 6400 married and unmarried FMWs. Cases were identified through self-reporting of female migrants concerning RTIs symtoms experienced in the 1 year prior to the study. Based on multivariate logistic regression results, we suggested that about 32% of FMWs reported having RTIs problems (27.6% in Hanoi, 30.3% in Danang, 36% in HCMC and 32.9% in Binhduong). We also identified different factors related to RTIs among different study sites. Marital status, level of education, social-economic status and numbers of migration were important related factors of RTIs.