According to the inquiry of Fertility Help Network, kindergartens generally have three meals (breakfast, lunch and dinner) at two o'clock, which are regularly and quantitatively supplied. The time interval between meals should not be less than 3.5 hours, and 4 hours is appropriate. From the point of view of nutrition, the average stay time of mixed food in the stomach is 4~5 hours. If the interval between meals is too long, it will cause children's hunger; If the interval is too short and the digestive organs can't get proper rest, it will affect the appetite and digestion of children, so the interval between meals is 4 hours.

By controlling the number of meals and the interval between meals, kindergartens guide children to develop the habit of eating regularly and quantitatively, which can not only ensure the intake of nutrients, but also prevent children from overeating their favorite foods and let children develop good eating habits.