A miniature display mainly includes glass shell, electron gun, deflection coil, magnetic shield. Electronic gun is in glass shell, and glass shell has deflection coil, the most outer being magnetic shield. The glass shell is the cylindrical depressed with the first half, from which leads HV lead. The electronic gun is the two crossing-flow large-caliber electric gun, including the core column, cathode component, modulation pole, speed up pole, focused pole and the anode coated inside the glass shell in turn. In the focused pole installed the two restricted flow membrane pore. This invention has the characteristics of small size, light weight, and high resolution, and it can be applied to the terminal display of modern high requirements.