By the means of survey research, we gathered data from one third of the parents whose children receive meals from the kitchens of the second biggest kindergarten in Slovenia, the kindergarten Velenje. We assessed the eating habits and lifestyle of their families and their satisfaction with nutrition supply in the aforementioned kindergarten. We noticed that the parents are generally satisfied with the nutrition supply. They are more directly than indirectly involved in the diet of preschool children. We discovered that parents are aware it is important for preschool children to develop healthy eating habits. They attribute the biggest influence on their development to social factors and to a lesser extent to cultural, personal, economic, biological and physiological factors. We evaluated parents’ objective knowledge of preschool children's diet in order to determine its influence on the eating habits and lifestyle of the respondents' families. We divided them into two groups – the first group consisted of parents with a higher degree of knowledge (62.5% of the respondents), while the other was comprised of those parents with less knowledge (37.5%). We discovered a positive correlation between the objective knowledge of preschool children’s diet and the eating habits and lifestyle of the respondents’ families. We predicted that socio-demographic data have a statistically significant influence on the respondents’ eating habits and lifestyle, which we proved only for the level of formal education attained and not for other socio-demographic data. Considering gender, age, current employment status/different activities/unemployment and the type of a settlement in which a family lives, we showed characteristic statistical dependency only in relation to individual indicators of eating habits and lifestyle. Ours is the first more extensive research in Slovenia which provides insight into parents’ attitude towards the importance of preschool children’s healthy eating habits. At the same time, it is the first research of such magnitude about parents’ satisfaction with nutrition supply in the kindergartens of Municipality Velenje.