Ag+ ion conducting xAg(2)O center dot(30 - x)Al2O3 center dot 55P(2)O(5)center dot 15SiO(2) (x = 20 and 25, mol%) glasses were prepared using a conventional melting method, and structures and glass transition temperature were investigated using X-ray diffraction (XRD), differential scanning calorimetry (DSC), ultraviolet-visible (UV-Vis) and Fourier transform infrared (FTIR) spectroscopies. Impedance measurement reveals the glass with x = 25 shows a high Ag+ ion conductivity of 3 x 10(-3) S cm(-1) at 300 degrees C. Ag+ ion emission measurement was carried out using a sharpened glass fiber tip less than 1 pm, and the emission current was successfully observed above the acceleration voltage of 4 kV at 300 degrees C and 4 x 10(-5) Pa. Silver particles were confirmed on the target substrate after the Ag+ emission measurement. A good linear correlation is obtained between log(current) and square root of the voltage, suggesting the emission of Ag+ ion from the tip of glass fiber is expressed by Schottky model. In this ion emission method, a plasma is not required for ionization and the ion emission mechanism is simple, and various ion conducting glasses can be applied for the emitter of ion gun.