Bubbles are inherently unstable, and their destruction requires three processes: redistribution of bubbles, thinning of the film thickness, and rupture of the film. However, for a relatively stable foam system, it takes a long time to achieve natural defoaming through these three processes. Defoaming agents are mostly used in all production. It is generally believed that defoaming agents reduce the local surface tension of the foam liquid film and defoam. Because of the low surface tension of the defoaming agent itself, it always penetrates into the foam system in the form of particles to locally reduce the surface tension of the bubble film. Since liquids with low surface tension always flow toward liquids with high surface tension, the membrane wall gradually becomes thinner and is strongly pulled by the surrounding membrane layers with high surface tension, resulting in stress imbalance, which eventually causes the bubbles to burst.