Patients with sensitive teeth will have a pronounced sensation for some temperature, chemical and mechanical stimuli, and the sensitive sensation is mainly associated with tooth soreness. If the teeth are sensitive it is recommended to take good oral care. In daily life, we should do a good job of brushing teeth on time, regular health care, and keep the inside of the mouth clean at all times. It is recommended to rinse your mouth after meals and brush your teeth in the morning and evening; it is not recommended to eat some food that is too hard, too cool or too hot with your teeth because these foods will increase the stimulation to your teeth. It is recommended to use soft-bristled toothbrushes in daily brushing. Soft-bristled toothbrushes can reduce the wear and tear on the hard tissues of teeth during brushing. At the same time, we should also pay attention to the choice of toothpaste, we should choose a more targeted anti-sensitive toothpaste to brush teeth, which can relieve the symptoms of sensitivity, and at the same time, it is recommended for long-term use. If tooth sensitivity is caused by cavities, it is recommended to treat the cavities as soon as possible. If the cavity is small, it is recommended to remove the decayed material before filling; if the cavity is large, it may need to be filled after root canal treatment. Most of the patients’ tooth sensitivity is caused by dental caries. Therefore, treating the caries in the mouth is the first choice. In the case of severe sensitivity it may even be necessary to treat tooth sensitivity by killing the nerve and turning the tooth into a dead pulp tooth. So when tooth sensitivity is suggested to strengthen the care of the oral cavity; promptly go to the regular dental medical institution for clear diagnosis and symptomatic treatment.