Girls with toothache can be treated separately after oral examination and taking whole mouth surface tomograms as follows: i. If the roots of milk teeth are completely resorbed during the replacement of milk and permanent teeth, and the margins of the remaining crowns stimulate gingival swelling and pain, the milk teeth can be extracted after applying surface anesthetics. Second, if the adjacency of the milk teeth is poor, often embedded food fibers, stimulating gingival swelling and pain, you can apply dental floss and dental flosser to remove the retained food, use 3% hydrogen peroxide solution to rinse the periodontal pockets, and apply iodine glycerin to speed up the anti-inflammatory process. Third, if the tooth eruption is difficult, resulting in swollen gums, the gums can be incised under local anesthesia to remove part of the soft tissue to help the tooth erupt smoothly. Fourth, if the deep caries of the crown causes pulpitis or apical periodontitis, the pulp can be opened and drained, and after removing the pulp, calcium hydroxide paste can be used to close the canal and repair the defect.