1 Postoperative algesia on the leg and foot, active flexion and extension of the malleolus, toe and phalanxes, and the lateral stress test of the knee were observed.

2 The time of algesia block level reached T10 was recorded.

3 Conclusion: The gastric algesia impulsion are mainly conducted by sympathetic afferent nerve.

4 Conclusion: The gastric algesia impulsion are mainly conducted by sympathetic afferent nerve. And NO protecting mucosa of gastric body are mainly introduced by vagus nerve.

5 The afferent nerve fibers were excited possibly belong to the different functional groups. Excitation of each group of fibers will cause algesia or analgesia respectively.

6 Results Huoxue Dingxuan Pill could obviously increase the pain threshold value, decrease algesia reaction, lessen the ear swelling degree and lower the capillary permeability in abdominal cavity.