Combustion is a rapid exothermic luminescence process during REDOX reaction between combustibles and oxidants. Flame combustion is an important research content in the field of combustion. The propagation speed of different fuels is also quite different. Flame propagation speed is a very important characteristic of fuel combustion. The design of burner and the control of combustion process must take flame propagation speed as reference. Geometric features and motion modes, as important objects of combustion research, have been the focus of scholars at home and abroad. With the help of high-speed cameras, the whole combustion process can be clearly recorded.