Purpose of this study to determine the effects of mother's nutritional knowledge on attitudes and behaviors children about nutrition. This study was carried out 132 boys and 170 girls, total 302 mothers of the students in Ankara, Turkey. The inventory was given to the mothers to determine their nutritional knowledge and attitudes and behaviors about their children's nutrition. Results indicated that many of the mothers who have higher nutritional knowledge level and their children have normal weight. The mothers who have higher level nutritional knowledge feed their children more with vegetable, fruit, legumes, and less sugared drinks such as pops, juice and fast foods than the mothers who have lower level of nutritional knowledge. Also, higher nutritional knowledge level mothers avoid giving the foods which contains artificial to their children, and believe more the knowledge about nutrition-health. Mothers' nutrition knowledge level affects children's eating habits. (C) 2013 The Authors. Published by Elsevier Ltd.