Objective:To systematically study regional anatomy of lumbar artery and identify the distribution of lumbar artery.Methods:50 samples of adult corpses with undamaged lumbar arteries were selected and anatomized.The shape and distribution of lumbar arteries and the diameter between them were observed.Results:Lumbar arteries in the 50 samples of adult corpses all stemmed from abdominal aorta.There were 42 cases(84%)of lumbar artery symmetric distribution

among which there were 38 cases(76%) of four pairs of waist artery

4 cases(8%)of 5 pairs and above

while there were 8 cases(16%)of lumbar artery asymmetric distribution.The branches of lumbar artery were mainly the former

after and ridge team.There were 12 cases of Adamkiewicz artery ridge teams.The origin and distribution of the left and right lumbar Adamkiewicz artery were statistically insignificant(P=0.911).Conclusion:Data of this study based on applied anatomy provides systematic and detailed basis for operations on the abdominal aorta and the relevant lumbar surgery.