Objective To summarize the diagnostic experience of dislocation of hip joint complicated with acetabulum,inform early diagnosis of acetabulum fracture and early operational treatment for relevent patients.Methods The clinical data of 30 cases with dislocation of hip joint complicated with acetabulum fracture were analyzed.Results In the 26 cases of paitnets who were followed up,12 cases were excellent,10 cases were good,3 cases were fair and one case was poor and the effective rate was 84%.Conclusion Operational treatment and anatomical reduction must be performed early for all hip dislocation complieated with acetabulum fracture patients with fracture displacement over 3mm or free bone fragment in acetabulum joint.The femoral traction treatment after manual reduction can be used to acetabulum fracture patients without obvious displacement.