The Alkoxylsilanes were synthesized by means of solvent method to methanolyze methyl-substituted chlorosilanes .The methanolysis was investigated under different reaction conditions:temperature,various solvents and dropping manner.Thas provide available experimental data for synthesizing these kinds of organo-silicone monomers. The Alkoxylsilanes were synthesized by means of a solvent method to methanolyze methyl-substituted chlorosilanes. The methanolysis was investigated under different reaction conditions: temperature, various solvents and dropping manner.