The purpose of the present study was to determine the relationship between physical activity level and coronary heart disease risk factors in middle-aged male workers. The subjects, age, weight and height were respectively 44.63±3.52, 76.63±7.41kg and 170±5.04cm. Subjects completed Baecke physical activity questionnaire and we measured weight, height, abdominal and hip circumference. Also, we measured skin fold in chest, abdomen and thigh to determine BF% . Finally we determined coronary heart disease risk factors such as SBP, DBP, TC, LDL-C, HDL-C, TG, TC/HDL and WHR. We used Pearson correlation analysis to analyze data at minimal level of significance (P<0.05). The results showed that there is a reverse significant relationship between physical activity level with TC,LDL-C, TC,HDL and BMI (P<0.05), whereas there is not a significant relationship between physical activity level with HDL-C, TG, WHR, SBP, DBP and BF%. The results showed that PA can cause a decrease in CHD risk factors and middle-aged workers can promote their health.