This product was developed for the analysis of the weight loss and pyrolysis weight (TGA) of materials during combustion in a vacuum or atmosphere. It includes balance, heating furnace, programmed temperature control system, recording system and other parts, which can observe the change of sample quality with temperature, time, vacuum degree and atmosphere state in the process of heating, constant temperature or cooling, and is equipped with a condensation collection device for pyrolytic substances. Widely used in plastics, rubber, coatings, drugs, catalysts, inorganic materials, metal materials and composite materials and other fields of research and development, process optimization and quality control.