Due to not forming the habit of brushing daily during childhood, and the frequent consumption of sugary foods during this period, the incidence of dental caries in children is relatively high. The onset of the disease is due to the presence of a large amount of dental plaque on the teeth, where bacteria gradually corrode the teeth, leading to the occurrence of caries. Initially, caries damage the tooth enamel on the surface, further progress destroys the dentin, and finally, it penetrates the dental pulp, forming pulpitis, which presents with obvious swelling and pain. Severe cases can also cause periapical periodontitis, leading to tooth loss, and affecting the normal emergence of permanent teeth. Therefore, it is important to maintain good oral hygiene and seek timely symptomatic treatment when children develop dental caries.