Children 5 years of age can undergo local anesthesia because with the development of modern medicine, the gradual understanding and mastery of the pharmacokinetics of local anesthetics, and the gradual advancement of monitoring tools, pediatric patients can often undergo surgery using local anesthesia. Local anesthesia methods include local infiltration anesthesia, local regional nerve blocks, and lumbar and epidural anesthesia. children under 5 years of age who undergo short outpatient surgeries, such as oral and dental, or extremity breaks requiring sutures, can be operated on entirely under local infiltration anesthesia. Less cooperative pediatric patients can be operated on using local anesthesia for the child with the assistance of basic anesthesia, or even intravenous general anesthesia. Because the sacral fissure markings are more obvious in pediatric patients, puncture is easier than in adults, and also after passing sacral anesthesia, the pediatric anesthesia plane often rarely reaches the level of thorax 4. If it does not reach the level of chest 4, it means that the surgical conditions can be met and there is little effect on circulatory breathing. This is by far the reason why sacral analgesia is used more in pediatric than in adult, so parents can not worry that local anesthesia can not meet the needs of surgery.