65 years,Type A in 1,Type B in 1).Radial nerve injury resulted from operation obtained complete recovery 3 months post-operation;1 case that transient ulnar nerve palsy recovered 3 days after operation;elbow heterotopic ossification in 1 case;there were no radial nerve injury in 23 cases where the plate was removed in same approach.Elbow function evaluated by Mayo Score system were excellent in 18,good in 8,fair in 4,bad in 3.At the last follow-up,the strength of triceps was about 4～5 grade.[Conclusion]The fracture of middle and lower humeral shaft can be exposed and fixed safely by triceps-splitting approach,the rate of complications was acceptable.