Integrated ion mobility tube forming method and ion mobility spectrometer thereof

The invention provides an integral ion migration tube forming method based on 3D printing and an ion migration spectrometer based on the integral ion migration tube forming method, molten-state or flow-state insulating materials are extruded and formed based on the 3D printing technology, an internal insulating structure is established, a prefabricated ion gate, an electrode plate, a shielding grid mesh and the like are embedded into the 3D-formed insulating structure, and the ion migration tube is formed. The insulation structure and the shell are of an integrated structure and are airtight, and the integrated migration tube is formed. The metal electrodes embedded in the migration tube and the insulation structures are arranged alternately, and the uniformity of an electric field is high. And the shell and the insulation structure are integrally formed, so that the problems of long consumed time, high cost, difficulty in assembly, non-uniform electric field, air tightness of the insulation layer and the ele