[Abstract] Objective: To find a long-term and effective imaging monitoring method for patients undergoing Ilizarov bone removal surgery, so as to improve the success rate of bone elongation.Methods: 19 cases of in patients undergoing the Ilizarov bone removal technique in week 1, 3-4 weeks, 6 to 8 weeks, 14-16 weeks and 24 go high frequency ultrasound, X-ray and clinical assessment, and X-ray plain film in sonographic findings was observed on new bone scab, morphology, density of new bone scabs do semi-quantitative analysis, measure the moving distance and make a contrast.Results: ultrasound and X-ray of new bone scabs semi-quantitative score trends over time, believe in week 1, 3-4 weeks, 6 to 8 weeks, 24 weeks ultrasonic and X-ray shows callus filling quantity differences statistically significant (P < 0.05) in 14-16 weeks ultrasonic and X-ray showed no statistically significant difference in callus filling quantity (P > 0.05).At the first week, 3-4 weeks, 6-8 weeks and 14-16 weeks, there was no significant difference between the measured values of the distance of the moving area measured by ultrasound and X-ray. At the 24th week, there was significant difference between the measured values of the length of the moving area measured by ultrasound and X-ray.Conclusion: Compared with X-ray, high-frequency ultrasound can detect new callus in the early stage of non-mineralization, but the effect of high-frequency ultrasound is limited in the later stage of mineralization. Therefore, ultrasound combined with X-ray can be used as a long-term routine monitoring method after Ilizarov bone removal.