The location of anesthesia for tooth extraction is related to the location of the extracted tooth and the type of anesthesia taken. Usually, the anesthetic is injected on the soft tissue of the gum near the extracted tooth or on the surrounding nerve.1. Upper anterior teeth: for infiltration anesthesia, the anesthetic is injected on the labial side. In the case of nerve block anesthesia, the needle is inserted at the top of the oral vestibular sulcus in the corresponding part of the lateral incisor and infraorbital nerve block anesthesia is performed. 2. maxillary premolar teeth: anesthesia is performed by injecting anesthetic on the buccal side for infiltration, or on the palatal mucosa for prepalatal nerve block anesthesia, or infraorbital nerve block anesthesia is performed. 3. maxillary molars: anesthetic is performed by injecting anesthetic on the posterior alveolar nerve and palatal major nerve. 4. maxillary first molars: anesthesia should be injected in the proximal buccal root for local infiltration anesthesia; 5. mandibular anterior teeth: anesthesia should be injected in the labial and lingual sides for infiltration anesthesia when extracting teeth; 6. mandibular premolar and molar teeth: anesthesia should be injected in the inferior alveolar nerve, lingual nerve and buccal nerve for nerve block anesthesia; 7. mandibular wisdom teeth: anesthesia should be injected in the soft tissue area of the pterygomandibular fold behind the wisdom teeth to anesthetize the inferior alveolar nerve to reach the soft tissue area. area to anesthetize the inferior alveolar nerve to achieve a good anesthetic effect.