Aim To assess the current epidemic characterization of myocardial infarction and risk factors among rural adult groups in Fuxin county of Liaoning province of China,and to provide scientific basis for preventing and intervening measurement of stroke in the rural area for government.Methods 30 214 resident people aged more than 35 years were collected with a multi-stage,stratified clustering sampling scheme in seven small towns of Fuxin county of Liaoning province,China.The blood pressure measurement and correlative risk factors about myocardial infarction were investigated by trained doctors.Results The prevalence rate of myocardial infarction for middle and old aged group in rural of Liaoning province was 0.29%,and the standardized prevalence rate was 0.28%.The prevalence and standardized rate of myocardial infarction for male were 0.26% and 0.25%,for female were 0.32% and 0.31% respectively.The difference between the male and female was not significant(0.90,P=0.342).With the age and grade of blood pressure increasing,the prevalence rate was obviously up.By Logistic regression,risk factors of age,overweight,obesity,family history of hypertension,hypertension,smoking,like-eating salty food and so on were close to myocardial infarction occurring.The fatalness of suffering from myocardial infarction among persons who had obesity was 6.08 times(95%CI:2.84～13.03)of the same age “healthy” groups.Conclusions Myocardial infarction was highly prevalent in rural areas of Liaoning province.Obesity and hypertension ranked the distinguished risk factors.However most residents were highly short of prevention about myocardial infarction.We should improve the awareness of risk factors and correlation knowledge on myocardial infarction to prevent myocardial infarction in rural population of Liaoning province.