Can you tell me about normal blood sugar level in child?

Depends on age. Normal values are: Premature baby 45-100mg/dl Full term baby 45-120mg/dl 1 wk old - 16 yr - 60-105mg/dl Older than 16 - 70-115mg/dl However, certain circumstances may change these slightly and still be considered normal, such as stress (physical or emotional), some medications and whether or not the test was done fasting.
70 to 99. a child's blood sugar should never be over 99. High seventies is probably ok especially if it has been many hours since a meal.