Objective: This research aims to evaluate the validity and reliability of the Turkish version of "lifestyle behaviours checklist" which was formulated life style behaviours of overweight and obese children. Method: The methodological research was conducted with 342 children and their parents who volunteered to participate in the clinical and field research. The original 25-item form developed by West and Sanders (2010), is a four-factor Likert-type scale (overeating, physical activity, emotional conflicts, reluctance to eat) had internal consistency of 0.92 and confidence scale score of 0.92. The problem scale is a 7-item Likert-type scale responds to the likert type with 7, and its confidence scale is scords between 1 and 10 points. Descriptive statistics, test-retest, content validity index, item correlation, Cronbach alpha and exploratory and confirmatory factor analysis were used in the analysis of the data. Results: The mean scores of the problem and confidence scales were 62.98±22.16 (range, 25-167 points), and 188.28±47.70 (range, 25-280 points) points, respectively. The mean BMI values of children, and parents were 21.26±4.21kg/m2 and 26.18±4.47 kg/m 2 , respectively. A six-factor structure was obtained: misbehavior in relation to food,reluctance/complaint against food, overeating, emotional correlates related to being overweight, hiding/concealing, overeating and watching TV, physical activity. According to confirmatory factor analysis, for the problem scale χ 2 /sd (3.8), RMSEA (0.082), CFI (0.95), NNFI (0.90); For the confidence scale, χ 2 /sd (3.50), RMSEA (0.102), CFI (0.95), and NNFI (0.93) were acceptable or show good fit. The internal consistency alpha coefficient was 0.86 and 0.92, for the problem and confidence scales, respectively, Test-retest correlation was found to be high for the problem (r=0.97) and the confidence scales (r=0.92). Conclusion: The Turkish lifestyle behavior checklist has been found to be reliable and valid tool that can be used to describe the lifestyle of overweight and obese children.