Family is the basic aspect in the development of child’s well-being. A positive parent behavior in daily routines and social support will lead to a better and safe environment for the family. This study aimed to investigate how this positive behavior in a family have a role in children’s well-being. Children’s Subjective Well-Being and Family Positive Behavior questionnaire were administered in two cities, Bandung and Sumedang, with proportionate stratified sampling on a school based sample of children and adolescence aged 9 to 13 years in 2017. Data from 367 children was analyzed with Partial Least Square using Smart PLS 2.0, with subjective well-being was employed in order to control the effect of positive family behavior (eat, connection, movement, play, learn, give, and religious). Findings showed that the amount of time spent with the child during mealtime, play, learn, sport, or worship, had no direct effect on children subjective well-being. We should be considered about the role of environmental experiences that affect wellbeing, not only about the quantities but the qualities. Children should take the meaning of positive family behavior such as safety, love, care and support to improve their self-esteem, self-confidence, aspiration and sense of secure, as the construct of children subjective wellbeing. Keywords: subjective well-being, positive family behavior, parent-child relationship.