To evaluate the biomechanical differences of Hydroxyapatite-Polyethylene composite coating and uncoated Ti-alloy implants. Methods The canine transcortical implant model was utilized At the end of the implantation periods push-out tests were carried out to acquire bone-coating interface shear strength of hydroxyapatite-polyethylene coating with uncoated Ti-alloy implants as control. Results The hydroxyapatite-polyethylene coating in every group showed greater shear strengths than uncoated implants being 3-5 times as much. The difference was significant statistically. (P<0.01) The strength increased with time reached the peak value at 12 weeks. Conclusions The interface shear strength of hydroxyapatite-polyethylene composite coating was much greater than that of the uncoated implants the results have revealed its good biomechanical characteristics which provided an effective method of biological fixation.