BACKGROUND. Statewide STIs does not decrease adamantly in last years, especially syphilis rate is amalgamative. Public health precaution cogency-based, assess prevalence of HIV/STI is supposed to encourage and organize intentionally. PURPOSE: assess prevalence of STIs2 among total persons of SBD. METHOD: analysis data based on outpatient department examination intelligences of patients examined in SBD clinic STI department from 2013 to 2016, controlling form and infectious disease activity EMT-304 reports. RESULT: 12.84% of total infectious disease registered in SBD from 2013-2016 is STI. 63% of the total STIs is syphilis. The causes of 68.05 females, 31.95% males of STIs total patients are that the females included more in a preventative inspection and pregnant inspections. Secondary and latent syphilis increasing regularly in every year and decreasing primary syphilis show the high prevalence of syphilis among SBD persons. Gonorrhea and trichomoniasisincreased by 1 promil on 10000 persons in every year. CONCLUSION: SBD STIs does not decrease constantly in last 4 years. Detection of STIs among pregnant improved by implementing ‘on point service’. High rate STI of among young persons caused insufficient information and knowledge about STIs and unhabit preventative of STIs.