Glass reactor is widely used in chemical industries, especially in fine chemical industry, petrochemical process and new material synthesis,etc.According to the heating requirements of the experiment, the body of the single-layer glass reactor is directly placed in the water/oil bath or heating mantle, and the constant temperature environment is set by adjusting the controller. The stirring speed can be controlled by adjusting the control knob, and the kettle can also be pumped to the state of negative pressure for vacuum reaction. The vapor rises to the condensing tube, cooled and liquefaction to realize the purpose of experiment, such as Reflux, Separation, Purification and Crystallization.