Abstract: Objective To investigate the prevalence and influence factors of dyslipidemia among adults in Tianjin city.Methods A cross-sectional study, including questionnaire survey and physical examination, was carried out among 8968 residents aged ≥18 years selected with stratified random sampling from January through December 2012.Results The concentrations of triglyceride(TG), total cholesterol(TC), high-density lipoprotein cholesterol(HDL-C), and low-density lipoprotein cholesterol(LDL-C) among the residents were 1.53±1.23 mmol/L, 4.91±1.10 mmol/L, 1.43±0.37mmol/L, and 2.86±0.80 mmol/L, respectively.The total prevalence rate of dyslipidemia was 28.88%, with a significantly higher rate among the males than among the females(34.63% vs. 19.98%, X²=223.5; P=0.000) and the rate increased with the increment of age among the residents under the age of 60 years and then decreased(χ_trend²=105.4, P=0.000), with the prevalence rates of 17.55%, 24.49%, 31.33%, 37.40%, 32.35%, and 28.36%for the residents aged 18-29, 30-39, 40-49, 50-59, 60-69, and ≥70 years, respectively.The prevalence rates of dyslipidemia components were 15.2% for high TG, 9.0% for high TC, 6.5% for high LDL-C, and 12.6% for low HDL-C, respectively.Non-conditional multivariate logistic regression analysis showed that at the age of 30 years or older, overweight or obesity, hypertension, diabetes, and hyperuricemia were risk factors and female gender and underweight were protective factors of dyslipidemia and high TG; female gender, aged ≥30 years, overweight, obesity, hypertension, diabetes and hyperuricemia were risk factors of high TC; female gender, aged ≥40 years, overweight, obesity, and hypertension were risk factors of high LDL-C; overweight, obesity, diabetes, and hyperuricemia were risk factors and female gender and underweight were protective factors of low HDL-C.Conclusion The prevalence of dyslipidemia is at a low level but increases rapidly in recent years among adult residents in Tianjin.The differences in the prevalence of dyslipidemia between male and female and among different age groups are statistically significant.Gender, age, overweight and obesity, hyperglycemia, hypertension, hyperuricemia are influence factors of dyslipidemia in the residents.