The best way to control the pain associated with drilling is to perform the procedure under local anesthesia. This type of patients can raise their hands and explain to the operating physician before the drilling operation, explaining that they have a very low tolerance for pain and are full of fear of drilling, and request that the drilling operation be performed under local anesthesia. The majority of doctors will comply with the patient’s request and give the patient a local anesthetic. In the oral operation, due to the drilling itself is in the dental hard tissue operation, its pain is not very obvious, so there are many cases of drilling is not applying anesthesia. However, in the current clinical practice, there are many patients who are very fearful of dental drilling operation, and strongly request for painless operation, and the current treatment concept is to try to think of the patient, so that the patient’s treatment is carried out in painless and comfortable conditions, so at present many dental drilling operation, the doctor will be the patient’s injection of anesthesia in the corresponding area before the operation, to ensure that the operation of the patient has no pain feeling.