Regular physical activity can play an important role in both the prevention and treatment of cardiovascular disease, hypertension, noninsulin-dependent diabetes mellitus, stroke, some cancers, osteoporosis and depression, as well as improving the lipid profile.' A met analysis of the relation between physical activity and coronary heart disease reported that the relative risk of coronary heart disease death in the least active compared with the most active was 1 9-fold. The magnitude of this relative risk is similar to that of the other important cardiovascular disease risk factors, cigarette smoking, hypertension, and hyperlipidemia.' Despite this evidence, it is estimated that 70% of the English population takes inadequate physical activity compared to 31% who smoke, 30% with a raised serum cholesterol concentration, and 15% who are hypertensive. In the Centers for Disease Control and Prevention (USA) and the American College of Sports Medicine recognized the importance of physical activity and published a public health message recommending that "every adult should accumulate 30 minutes or more of moderate-intensity physical activity on most, preferably all days of the week".Aim of this study: To Assessing Physical activity and Perceived barriers among physicians in Primary Health Care in Makkah city. Cross sectional 2021Methodology: Cross sectional study is conducted at Primary healthcare centers in Makkah city, multi stages cluster random sample technique was be applied on the main sectors inside Makkah city in2021. Results:the perceived barriers to adherence to physical activity among physicians are 7. Started with lack of time, the majority of participants scored average (40.0%) while X2 5.920 while no significant relation was P-value=0.052. The second barrier was social influence, the majority of participants were counted as a weak barrier (65.0%) while X2 112.120 while a significant relation were P-value=0.001. Conclusion:Levels of physical activity can be increased and the increase can be maintained for at least two years. Interventions that encourage walking and do not require attendance at a facility are most likely to lead to sustainable increases in overall physical activity. Regular follow up, which need not be time consuming and expensive, improves the proportion of people able to maintain initial increases.