Objective To explore the relationship between the jaw bone density measured by the cone beam computed tomography and the torque of implants. Methods Sixty three patients with dentition defect who planned to receive implant prosthesis were randomly selected. Patients were scanned by the cone beam computed tomography and HU values of the jaw bone density at implant sites were measured by the Kavo eXam Vision software. Torque values of 83 implants were recorded according to requirements of the cylinder root form implant of Biomet 3i. The linear regression equation was then acquired based on the data of scatter diagram and the relationship between the jaw bone density and the torque of implants was analyzed. Results The measurement results of cone beam computed tomography showed that bone density values of the maxillary anterior, maxillary posterior, mandibular anterior, and mandibular posterior were (415.44±147.14) HU, (336.00±148.04) HU, (815.09±88.08) HU, and (537.08±167.28) HU, respectively. The torque values of implants of the maxillary anterior, maxillary posterior, mandibular anterior, and mandibular posterior were (43.08±10.52) Ncm, (36.90±11.68) Ncm, (50.00±0.00) Ncm, and (44.05±11.17) Ncm, respectively. The results of correlation analysis indicated that the jaw bone density measured by the cone beam computed tomography and the torque of implants were highly correlated (r=0.536, P<0.01). Conclusion According to the jaw bone density at implant sites measured by the cone beam computed tomography, the torque of implants can be preliminarily estimated and it is helpful for making the operation plan.