Quantum private query provides a contemporary solution to protect both user privacy and database security for the classical database administration and maintenance. A novel protocol of database private query based on high capability quantum key distribution is proposed, which examines if the inconsistent orthogonal basis usage and the error rate beyond the threshold for providing the high security among the key sender, carrier and verifier. The presented protocol could not only guarantees the query privacy and database security but also stand against the external eavesdropper.