Abstract: Objective：The primary aim of this study was to measure the buccolingual alveolar bone thickness between the maxillary central incisors by CBCT, providing reference for the safe miniscrew placement. Methods：The cone beam computed tomography images of 80 patients were used. For each subject, the distance between the anterior nasopalatine canal and maxillary anterior buccal bone were measured. Besides, the buccolingual alveolar bone thickness on the median sagittal plane were measured at four different levels of 14.0, 16.0, 18.0 and 20.0mm from the reference plane. Results：Distance between the anterior nasopalatine canal and maxillary anterior buccal bone were (7.98±1.24) mm,(8.27±1.44) mm,(10.31±2.00) mm.It increased from the oral cavity to the nasal cavity, and had significant difference. No significant difference was noted between age groups. The buccolingual alveolar bone thickness has no significant difference at four different levels. Male has greater bone thickness than female at every level. No significant difference was noted between age groups. Conclusions：The miniscrew with 6mm length in the bone is safe to be placed. It is safe to implant miniscrews of 6mm length between the maxillary central incisors, which will avoid the nasoplatine canal injury.