Introduction: Cardiovascular diseases have been associated with several risk factors. The aim of this study was to identify the cardiovascular risks and level of physical activity in children from a public school. Methods: Cross-sectional and descriptive in children and approved by the Ethics Committee. We investigated 153 children between six and 13 years (mean 8.4 ± 1.5 years), from May to August 2013. Rating: personal data, vital signs, physical examination (blood pressure), anthropometry (weight, height and BMI) and International Physical Activity Questionnaire (IPAQ) short version. Results: Among the 153 children studied, there was 43.8% male and 56.2% female, most of the 2nd grade year (37.91%) followed by 5th grade (24.18%). Regarding BMI was observed that 27.45% had overweight (16.34% overweight and 11.11% obese). It has been observed average systolic BP 90.53 mmHg (± 11.12) and mean diastolic BP 54.04 mmHg (± 10.27). Regarding the IPAQ, observed most of 94 children, 62% are classified as insufficiently active, followed by 23% active and 15% are very active. Conclusions: The findings of this study showed that most of the children were considered insufficiently active and there was a high prevalence of overweight and obesity. Regarding the values ​​of BP, most are normal. These findings highlight the need to adopt preventive care, aiming enhance healthy eating habits with regular practice of physical activity, in an attempt to minimize the incidence of overweight and obesity in children.