Abstract: Objective To understand the environmental health literacy level and influencing factors of residents aged 50-69 in a rural suburb of Shanghai,and provide reference for improving the environmental health literacy of this group. Methods In 2023,a multi-stage cluster random sampling method was used to conduct an environmental health literacy survey on 298 permanent rural residents aged 50-69,and the data were analyzed. Results The average score of environmental health literacy among 298 survey subjects was（51.16±18.95）points. There were statistically significant differences in environmental health literacy scores among individuals with different education level,occupation,and per capita disposable income in the family（all P<0.01） .The highest scores within each group were high school and above education level group[（59.01±16.33）points],urban workers[（55.08±18.04） points],and 5 500-<13 000 yuan income group[（57.25±17.08）points]. The overall level of environmental health literacy was 19.13%,with basic concept,basic knowledge and basic skill literacy level of 19.13%,20.81% and 23.83%,respectively. There were statistically significant differences in the overall literacy and three categories of literacy levels among residents with different levels of education（all P<0.01）,and the overall level increased with the increase of education level. Compared with primary school and below education level,middle school and above education level was a promoting factor for the improvement of literacy level（OR_{Middle school}=3.954,95%CI：1.062-14.718,OR_{High school and above}=7.759,95%CI：2.030-29.649）. Conclusion In 2023,the environmental health literacy level of 298 rural residents aged 50-69 in a suburban area of Shanghai was 19.13%,with education level being the influencing factor. It is recommended to continuously strengthen the improvement of environmental health literacy among residents in this category.

Key words: Environmental health literacy, Classifcation literacy, Rural areas, Investigation and analysis