Objective To study Study on the Relationship between Occupational Psychological Stress and Cardiovascular Diseases. Methods 580 healthy people who had physical examination in the Department of Cardiology and physical examination clinic of Taizhou People's Hospital were selected as the research objects. All of them were investigated by OSI-R questionnaire. They were divided into case group and control group according to the existence of occupational psychological stress. Multivariate Logistic regression analysis was used to explore the relationship between CVD and CVD. Results 580 cases with into the object of study, in which case group (n=290) the professional task of their scores and six dimensions, individual stress reaction questionnaire scores and the five dimensions of score were higher than the control group (n=290), and individual ability questionnaire score cases strain five dimension scores are lower than the control group, difference has statistical significance (P<0.05). The systolic blood pressure (SBP), triglyceride (TG), low-density lipoprotein cholesterol (LDL-C), homocysteine (Hcy) and body mass index (BMI) in the control group were lower than those in the case group. The HDL-C index of the control group was higher than that of the case group, and the difference was statistically significant (P <0.05). There were significant differences in SBP, HDL-C, LDL-C and BMI among different occupational task questionnaire scores (P<0.05). There were significant differences in TG and BMI among different individual stress response questionnaire scores (P<0.05). There were significant differences in SBP, TG, HDL-C and BMI among different strain individual ability questionnaire scores (P<0.05). SBP, BMI, occupational stress factor level and individual stress response level are risk factors of cardiovascular disease, HDL-C and strain individual ability level are protective factors of cardiovascular disease. Conclusion Occupational psychological stress is closely related to cardiovascular diseases, which can be affected by many factors.