The present invention is about a kind of automatic oral cavity scanning machine, for an oral cavity, oral cavity has two row of teeth configured above and below, this automatic oral cavity scanning machine includes that a clamping device, an orbital member and one or more mobile image procossing groups, clamping device are sandwiched between two row of teeth;Orbital member is mounted on the centre of clamping device and corresponding row of teeth setting, the shape of orbital member are similar to the shape of row of teeth;Mobile image procossing group is installed on orbital member and slides along orbital member, and mobile image procossing group corresponds to tooth row arrangement.Whereby, with reach automatic oral cavity scanning machine have the advantages that it is easy to operate.
