Objective To observe the value of drug therapy by the arterio of thigh in the treatment of osteosarcoma of the leg bones. Methods 13 cases of patients with osteosarcoma of the leg bones were treaded with DDP, ADM and VCR by the arterio of thigh, IFO by phlebo. Results The response rates(PP+CR) to osteosarcoma lesions were 69.2 %. Conclusion The comdination regimen with drug therapy by the arterio of thigh is simple and safe and effective for osteosarcoma of the leg bones, which is worth spreading and applying.