Many parents think that since the baby teeth will be replaced by permanent teeth sooner or later, it doesn’t matter if the baby teeth have worm teeth, they don’t need to be treated. This kind of thinking is not right. Because 1. the decay of milk teeth will affect the chewing efficiency 2. it will affect the normal bite relationship 3. it will cause pulpitis, produce pain, and then pus, forming long-term infection lesions 4. the early loss of milk teeth will destroy the normal replacement order of milk and permanent teeth, and will easily cause crowded teeth. In short, it is most important to keep your teeth healthy at all times. Everything according to the physiological law. Everything from the small, half the effort. Wait until it is serious, not only delay the disease, increase the suffering of the child, but also increase the economic burden of parents. Prevention is better than cure ！！！！！！！！！！ Xu Jianshi, Department of Stomatology, General Hospital of Jinan Military District