Methyl silicone oil is one of the most widely used silicone polymers that have been commercialized the fastest. The method for producing methyl silicone oil mainly includes an acid balance method and an alkali balance method. The acid balance method is suitable for the production of low-viscosity silicone oils with a viscosity of less than 500 mm2 / s. This method generally uses concentrated sulfuric acid as a catalyst and reacts at 50 to 60 ° C. It is then washed with water to remove the acid, remove the boiling point material and add activated carbon for decolorization to convert it to decolorization and finished product. The alkali balance method is suitable for the production of medium viscosity and high viscosity silicone oils having a viscosity of 100 mm2 / s or more. In the production of methyl silicone oil, the components of the raw material DMC (Dimethyl Mixed Ring) are optimally activated at different temperatures, and ring-opening polymerization is performed separately to increase conversion and greatly improve production efficiency.