This prospective randomized is designed to evaluate the safety and efficacy of hernia repairs using local anesthesia compared with those using general anesthesia for patients with incarcerated hernia.

The outcome parameters measured included intraoperative conditions, postoperative conditions and long-term follow-up conditions.

Inclusion Criteria:

1. Age 18-70 years
2. Primary inguinal hernia
3. ASA I-II
4. Clinical diagnosis of incarcerated hernia
5. randomly select patch agreed by patients and family members

Exclusion Criteria:

1. severe organ dysfunction
2. No-tolerate anesthesia
3. No-suitable for operation
4. spirit disease patients
5. automatically exit