Sore teeth when eating hot and cold belong to the symptoms of tooth sensitivity, which may be related to early pulpitis, gum recession, hidden cracks and other factors, the patient can relieve the condition through general treatment, medication, surgical treatment and other ways. 1. Early pulpitis: patients should pay attention to oral hygiene, rinse the mouth after eating, and avoid eating too hard, too cold, too hot food and drinks. Patients can be treated by opening pulp drainage, root canal treatment, pulp amputation and so on. 2. Gingival recession: patients should correct the way of brushing and tools, and make adjustments to unevenly worn teeth and traumatic occlusal relationships. The patient can cover the exposed root surfaces through gingival surgery. 3. Cracked teeth: patients can also be repaired through the enamel, endodontic symptoms can be root canal treatment after crown repair, cracked teeth can not be retained in serious, can be removed after implantation repair. It is recommended that patients develop good dietary habits, eat less hard food, avoid sudden changes in cold and hot temperatures to stimulate the pulp, master the correct brushing method, regular checkups and so on.