Children need to pay more attention to oral hygiene after the loss of teeth, timely cleaning of teeth, to prevent the growth of bacteria, and develop good eating habits. During the period of tooth replacement, we must ensure oral hygiene, and develop a good habit of brushing teeth in the morning and evening, and rinsing mouth after meals. This will prevent dental caries caused by bacterial growth and even affect the dental health of newly erupted permanent teeth. At the same time, we should be careful not to use the tongue to lick the newly erupted permanent teeth, to prevent the teeth from growing crooked, affecting the aesthetic at the same time will also squeeze the surrounding healthy teeth to affect the function of the teeth. It is also worth noting that children should pay attention to their diet after tooth loss, try to eat as little as possible to eat hard food, to avoid damage to the gums. Also pay attention to eat less sweets, to avoid causing dental caries.