Jacketed glass reactor is double-layer glass design, the inner layer is put into the reaction medium to perform the stirring reaction, and the interlayer can be connected with different cold and heat sources (refrigerant, hot water or hot oil) for circulating heating or cooling reactions. Under the set constant temperature conditions, in a closed glass reactor, the reaction can be stirred under normal or negative pressure according to the requirements of use, and the reaction solution can be refluxed and distilled. It is a modern fine chemical plant, Ideal pilot plant and production equipment for the synthesis of new materials.