Objective To understand the prevalence of hypertension among people aged 40 and over in Jiangyang District of Luzhou City，and to explore its influencing factors preliminarily，so as to provide a reference for the prevention and control of hypertension in Jiangyang District of Luzhou City. Methods The population over the age of 40 who participated in the health check-up in Jiangyang District of Luzhou City in 2021 was used as the research object. The method of the current situation study was adopted，and the univariate analysis was carried out by chi-square test，and the multivariate analysis was carried out by logistic regression to analyze the prevalence and influencing factors of hypertension. Results There were 107，295 subjects in this study，including 44，933 hypertensive patients，with a prevalence rate of 41.9%. There were statistically significant differences in the prevalence of hypertension among populations with different genders，ages，marital statuses，educational levels，smoking habits，alcohol consumption habits，family histories of hypertension，and BMI （P < 0.05）. Multivariate results showed that: male （OR = 1.121，95%CI:1.070 ~ 1.174），advanced age （compared with 40 ~ years old: OR50~ = 2.639，95%CI: 2.476 ~ 2.812；OR60~ = 4.416，95%CI:4.151 ~ 4.699；OR70~ = 7.410，95%CI:6.951 ~ 7.899；OR80~ = 11.067，95%CI:10.250 ~ 11.950），not married （OR = 1.163，95%CI:1.124～1.204），overweight and obesity （ORoverweight = 1.794，95%CI: 1.742 ～ 1.848；ORobesity = 3.362，95%CI:3.230 ～ 3.501），family history of hypertension （OR = 3.877，95%CI: 3.762 ~ 3.966） might be risk factors for hypertension；higher educational level （compared with primary school and below: ORjunior high school = 0.876，95%CI: 0.848 ~ 0.905；ORhigh school/secondary school = 0.868，95%CI: 0.826 ~ 0.913；ORcollege and above = 0.912，95%CI: 0.839 ~ 0.991） might be a protective factor for hypertension. Conclusion The prevalence of hypertension among people aged 40 and over in Jiangyang District of Luzhou City was higher than the national level. There is still room for improvement in the prevention and control of hypertension in Jiangyang District of Luzhou City. We should take corresponding measures to prevent and control hypertension according to gender，age，marital status，education level，alcohol consumption，BMI，et al.