Tooth soreness is often considered as discomfort caused by chewing excessively acidic foods, which usually resolves on its own. In addition, it can be seen in dentin sensitivity or chronic periodontitis, where a variety of factors damage the enamel, resulting in transient soreness or discomfort when the teeth are stimulated within the physiological range. Treatment of the primary cause of dentin sensitivity and chronic periodontitis, etc. can effectively relieve tooth soreness: 1. Dentin sensitivity: mostly caused by tooth wear, caries, wedge-shaped defect, hidden tooth fracture, tooth fracture, acid erosion, gum recession, etc., affected by oral hygiene and chewing habits. It is recommended to correct the brushing method, remove the necrotic tissues for mild and moderate caries, and then carry out filling and repair, moderate caries may hurt the dental nerve, and root canal treatment should be carried out in time; filling treatment should be carried out for tooth defect; filling treatment should be carried out for tooth occultation and large tooth defect, and crown should be worn after root canal treatment. Detailed treatment is recommended to consult the oral surgeon, according to the cause of the lesion to deal with; 2, chronic periodontitis: plaque bacteria invasion of periodontal tissue caused by, resulting in periodontal inflammation, which leads to tooth pain. Can be thoroughly remove plaque and tartar, reduce the stimulation for periodontal, clinical often use hydrogen peroxide solution rinse, chlorhexidine rinse, and iodine preparations coated in the gum sulcus, can play the role of sterilization, anti-infection, if necessary, also need to gum scraping. If soreness is evident, medications such as ibuprofen and acetaminophen may be given in appropriate amounts to relieve symptoms. If an abscess is present, surgical drainage is also required. In addition, daily attention should be paid to oral hygiene, vertical brushing, minimizing smoking and alcohol consumption, and eating less spicy, hot, cold, sour and sweet stimulating foods to avoid re-stimulating the teeth.