Children with toothache are recommended to go to the stomatology department of regular hospitals for consultation in a timely manner. Tooth pain is mostly caused by diseases of the dental tissues, and common diseases include pulpitis and apical periapical inflammation. 1. Pulpitis: Inflammatory and purulent changes in the pulp tissue lead to symptoms of tooth pain. Root canal treatment is recommended to remove the infected material from the root canal, so that the pressure can be released, the pain can be relieved and the disease can be cured, thus completely solving the problem of tooth pain. 2. Periapical periodontitis: it is mostly a secondary condition of endodontitis, with symptoms such as tooth pressure and pain, swollen gums in the apical part of the tooth, and even accompanied by fever and fatigue, etc. It can be treated by opening up the pulp and draining, incising and draining the pus, etc. In general, it is necessary to pay more attention to oral hygiene. Normally, we should pay more attention to oral hygiene and cleanliness, as little as possible to eat spicy and stimulating food, to avoid excessive stimulation of the teeth, the diet should be light, and to develop a good dietary habits. When children have toothache, it is recommended to seek medical treatment in time to avoid delaying the condition.