Objective: To study relationship between exercise and risk factors for cardiovascular diseases. Methods: A total of 750 military cadres retired or on the job, who received convalescence therapy in Guangzhou sanatorium, were enrolled as survey subjects, and divided into exercise group（488 cases）, and no- exercise group （262 cases）. The cardiovascular risk factors such as blood pressure, body mass index (BMI), fasting blood glucose（FBS）, total cholesterol （TC）, triglyceride （TG）and uric acid were measured. Questionnaires were used to survey mode of exercise, exercise frequency, exercise duration each time and total exercise time in a day. Results: 1. In no-exercise group, levels of systolic blood pressure, diastolic blood pressure, BMI, FBS, TC and TG were significantly higher than those of exercise group (P<0.05 all), but there were no significant difference in age and levels of HDL-C, LDL-C and uric acid between the two groups（P＞0.05 all）; 2. （1） Abnormal rate of risk factors for cardiovascular diseases （call for short was risk rate, similarly hereinafter）in different exercise duration each time （≥30 min、＜30 min）and exercise mode（walking, taijiquan）were no significant（P＞0.05 all）;（2）Risk rate in subjects who took exercise >60min in a day was significantly lower than that of those with ≤60min (29.41% vs. 45.59%), in subjects whose exercise intensity with RPE（Borg rating of perceived exertion scale）11~15 was significantly lower than that of with RPE <11 (33.67% vs. 44.64%), P<0.05 all;（3）Risk rate in subjects whose exercise frequency ≥3 times/week was significantly lower than that of with ＜3 times/week （31.47% vs.8.43%）, in subjects whose persistence time of exercise was 10～19 years was significantly lower than that of with ＜10 years, P<0.05 all. Conclusion: 1. Risk extent of cardiovascular diseases is lower in exercise group, and there is additive effect in risk factor for cardiovascular diseases; 2. take exercise >60min/d, Borg rating of perceived exertion scale 11~15, exercise frequency ≥3 times/week and long time persistence are conduce to decrease risk of cardiovascular diseases in middle-aged and aged persons.