The natural gas heating continuous atmosphere protection bright furnace is an advanced heat treatment equipment that combines the high efficiency of natural gas heating and the superiority of atmosphere protection, and is widely used in metal processing and other industrial fields. Natural gas heating continuous atmosphere protection bright furnace is mainly used for heat treatment of metal materials, such as annealing, brazing, sintering and other processes. The heat generated by the combustion of natural gas is used to heat the workpiece, while a specific atmosphere (such as hydrogen, nitrogen, etc.) is introduced to protect the workpiece from oxidation during the heating process, thereby achieving the effect of bright treatment.