The trisubstituted tungstogalliumate α-Na~nH~m[GaW~9O~3~7M~3(H~2O)3]·nH~2O [M=Fe(Ⅲ), Cu(Ⅱ), Co(Ⅱ)] have been synthesized and characterized by elemental analysis, UV, IR, electrochemistry, ^1^8^3W NMR and TG-DTA. The data of magnetic susceptibility show that complexes possess antiferromagnetism. The determination of conductibility exhibit that complexes are a excellent high-proton conductor. In which, σ value of GaW~9Fe~3 is above 10^-^3S·cm^-^1 at 15℃. The title complexes with high stability to thermal will be expeted to be practical heteropolyacid type solid electrolyte.

Key words: SOLID ELECTROLYTE, ELECTRICAL CONDUCTIVITY, MAGNETISM, GALLIUM COMPLEX, TUNGSTEN COMPLEX