Ammonia evaporation method was employed to prepare Ni catalysts loaded on KIT-6 mesoporous silica for the dry reforming of methane. The influence of preparation method and process parameters on the stability and coke resistance of the catalysts were investigated, by comparing the catalysts prepared with different ammonia concentration as well as that with impregnation method. Characterization and analysis including ICP-OES, XRD, N2 isothermal adsorption-desorption, TEM, H2-TPR, Raman and TGA/DSC were carried out. It was found that Ni phyllosilicate was formed by using ammonia evaporation method, which promoted the high dispersion of Ni in the mesopores and effectively prevented carbon deposition. Catalysts prepared with 28% and 20% ammonia presented excellent catalytic activity and coke resistance. The conversion of CH4 and CO2 in the methane dry reforming reaction at 700 ℃ was ca. 85% and ca. 91%, respectively, with almost no carbon deposition. When the ammonia concentration was reduced to 10%, the formation of excessive Ni phyllosilicate destroyed the mesoporous structure, leading to severe carbon deposition. The same situation happened to the catalyst prepared by impregnation method owing to the agglomeration of Ni particles on the external surface of the support.