Abstract: The Ag nanoparticles were formed on the glass by DC sputtering and high temperature annealing. By controlling the different annealing temperature and etching time, the change trend transmittance and wettability of glass were studied. The size and distribution of Ag nanoparticles were observed by scanning electron microscopy ( SEM ) . The change of the transmittance of the glass after etching was determined by the UV-VIS spectrophotometer. The surface contact angle instrument was used for the determination of changes in the wettability of glass surface after etching, and after treatment with organic fluorine silane. Results show that when the annealing temperature reached to 300 ℃, Ag nanoparticles were more uniform; when etching time was 4min, transmittance of visible light can be increased up to 93. 8%, and the maximum of the sample is 3. 8% compared with the original sample;the hydrophilic of the glass is more obvious after etching, the contact angle measured was about 9 ° . The hydrophobicity of the surface of the glass was improved after chemical modification, but the enhancement was not obvious, and the contact angle of the surface was 102°.