Abstract The existing textbooks use sucrose and baking soda as raw materials for the experiment of “burning sugar to form snake”, which has some problems such as short growth length and slow growth rate, reducing the interest and enjoyment of this experiment. Based on the analysis of the function of baking soda, the innovation and improvement of the experiment of “burning sugar to snake” by replacing baking soda with oxygen generation compounds were systematically explored. The results showed that the growth length and growth rate of the snake were greatly increased by burning sugar with potassium permanganate and sodium chlorate instead of baking soda. The improved experiment was more interesting, ornamental and exploratory, and with more obvious phenomena.