ObjectiveTo look for a way of iliac bone graft with less invasive, simple and less complications. Methods65 patients needed bone grafting were treated with the iliac bone drilled by the way of “minimally invasive tunnel with trephine (MITT)”. ResultsThis group of patients bone taking mass were 4.5-9.5 mL［(6.2±1.2) mL］.Both patients were followed up for 10 to 27 months. No infection, iliac fractures, abdominal hernia, numbness and other complications were found at donor site. The hip joint is good，and receptive area obtained bone union after 3 to 7 months. ConclusionsMITT took simple operation, less bleeding and fewer complications, while receptive area has no special requirements about volume and shape of drilling ilium, it is a recommendable treatment method in clinical.

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