In children with painful tooth decay, an oral examination is performed to probe the depth of the cavity, test the pulp vitality, and take x-rays. If the bottom of the cavity is close to the pulpal angle and sensitivity occurs when exposed to cold, heat, acid, or sweetness, a small digging spoon can be applied to slowly remove the decayed material, apply stain to the bottom of the cavity, and after removing the discolored tooth tissue, a clove oil zinc oxide paste is placed to soothe and analgesic the pain. Pain relief is followed by double-layer bedding to repair the defect. If radiographs show that the carious cavity is penetrating the pulp cavity and acute pulpitis occurs, endodontic anesthesia is performed, infected pulp tissue is removed, the root canal is rinsed using a hydrogen peroxide solution, and the root canal is closed by applying a calcium hydroxide paste. If residual roots and crowns are formed in the milk teeth, resulting in recurrent periodontal swelling and pain, they need to be extracted as soon as possible.