Tooth a hole pain is usually due to tooth decay caused by the destruction of tooth enamel, without timely treatment will further develop to stimulate the nerve of the tooth caused by the pain. Dental caries, commonly known as tooth decay, destroys the enamel on the surface, causing the dentin to be exposed and making a hole in the surface of the tooth, which can cause pain when exposed to external stimuli such as eating food that is too cold or too hot. If not treated early, it is likely to invade the pulp and cause pain. It is recommended that caries should be handled in a timely manner to avoid the occurrence of small holes without filling and large holes with pain, and timely fillings or root canal treatment should be carried out according to the degree of decay of caries. Daily life should develop the habit of brushing teeth in the morning and evening, rinsing the mouth after meals, eating less acidic and stimulating foods, foods with high sugar content, regular oral examination.