Silver is a potential candidate of flexible transparent electrode materials due to its excellent conductivity,malleability and ease preparation.Ag thin films with different th icknesses (6 nm,10 nm,14 nm,18 nm, 20 nm,24 nm) were prepared by vacuum thermal evaporation.Because of the combined effect of light scattering and absorption,the transmittance decreased first,then increased,an d then decreased with the increase of thickness.When the thickness of Ag film was 18 nm,the best tran smittance was about 60%.Meanwhile,the surface resistance decreased gradually with the increase of thickness.In order to improve the transmittance of Ag film,molybdenum trioxide (MoO₃) with high refr active index of 2.1 was introduced to modify Ag film to prepare MoO₃/Ag/MoO₃ (MAM) multilayer film .The results show that the introduction of MoO₃ smoothes the surface of Ag film,reduces t he surface resistance and improves the conductivity.More importantly,the refractive index coupling o ccurs at the MoO₃/Ag interface,which greatly improves the overall transmittance of the mult i layer,and the transmittance generally increases by at least 10%.When the thickne ss of Ag is 14 nm,the transmittance of MAM multilayer is the best,up to 70 %.Finally,the feasibilit y of silver transparent electrode was verified in a green organic light-emittin g diode (OLED).