Objective Based on the monitoring baseline survey data of hypertension and sodium intake in Anhui Province in 2019,the prevalence and influence factors of awareness and utilization of low sodium salt among adult residents was analyzed. Methods Multi-stage stratified cluster random sampling method was used to select participants aged 18-69 to conduct a questionnaire survey and test related indicators.Information on the demographic characteristics,smoking,alcohol consumption and physical activity of the respondents was obtained by questionnaire.BMI,waist circumference and blood pressure values were obtained by body measurements.Design-based methods using complex weights and post-stratified weights were used to analyze the awareness and utilization rates of low sodium among residents with different characteristics and their influencing factors. Results In all,3 405 participants were included.The awareness and utilization rates of low sodium were 48.0% and 22.1%,respectively.The awareness and utilization rates of low sodium were different in subgroups (P<0.05).Multivariate logistic regression analysis showed that women (OR=1.436,95%CI:1.045~1.973),higher education (OR=6.802,95%CI:4.516~10.244),middle school education (OR=4.751 95%CI:3.537-6.380) and urban residents (OR=2.580,95%CI:2.007-3.317) were the positive factors affecting the high awareness rate of low sodium salt,while current smokers (OR=0.571,95%CI:0.410~0.794 ) was the opposite.Higher education (OR=5.542,95%CI:3.496~8.786) and secondary education (OR=3.658,95%CI:2.511~5.329),separated/divorced/widowed were higher than single (OR=3.874,95%CI:1.836~8.061),and urban residents (OR=2.366,95%CI:1.799~3.112) were a positive factor for the high rate of low sodium use. Conclusions The prevalence of awareness and utilization of low sodium salt among residents in Anhui province were low,and influenced by factors such as gender,education level and urban and rural areas.Extensive and in-depth salt-reduction health education are needed to guide residents to correctly understand low sodium salt.Moreover,by actively encouraging production of low sodium salt and implementing price subsidies,the proportion of low sodium salt use will be increased.