Tension-free inguinal hernia repair under local anesthesia has been proved to be a safe, simple, effective and economical anesthesia, and has been widely promoted and applied in the clinic. What are the advantages of local anesthesia compared with general anesthesia, epidural anesthesia, and intralesional anesthesia, which will be stated one by one as follows: I. Safety: local anesthesia has little influence on the general body, and it basically doesn’t cause any interference to the heart, blood pressure, and respiration, and there is no fluctuation in blood pressure and respiratory depression. There is no fluctuation of blood pressure and respiratory depression, which is undoubtedly the most reasonable choice for patients with cardiac and cerebral blood pressure diseases, elderly patients and patients with combined organ insufficiency. Few postoperative complications, generally there will be no anesthesia-induced urinary retention, headache, dizziness, nausea, vomiting and other symptoms, will not affect the function of the intestinal tract, does not affect eating. Second, simple: the surgical process can be completed by the operator, anesthesia has a fast onset of action, can be injected at once, can also be injected at anatomical levels, 1-2 minutes onset of action, you can choose the duration of different anesthetic to ensure that the effect of anesthesia and post-operative analgesia. Third, economic: local anesthesia cost is very low, local anesthesia drug mouth than the effect of cheap, compared with other anesthesia can save several hundred to several thousand ranging from, at the same time can reduce the hospitalization time, can be admitted to the hospital surgery, no need for preoperative fasting, fewer postoperative complications, can be done to promote day surgery, to further solve the hospitalization difficult, expensive problem.