Under specific environmental conditions, the chemical structure of the China Biodegradable packing bags changes significantly. The molecular chain of the China Biodegradable packing bags can be biodegraded by microorganisms in the natural ring of the waste treatment system or the environment, and finally it can be degraded by microorganisms. Converted to carbon dioxide (or methane) and water, and entered into the biological combined cycle process, completely absorbed by the environment, leaving no polymer.

There are two methods of degradation of China Biodegradable packing bags, which can be divided into:
(1) Biophysical degradation method: When microorganisms attack and erode polymer materials, due to the growth of biological cells, the polymer components are hydrolyzed, ionized or protonated, and then split into oligomer fragments, and the polymer is degraded by molecules. The structure remains unchanged, which is the degradation process of macromolecular biophysical action.
(2) Biochemical degradation method: Due to the direct action of microorganisms or enzymes, polymers are decomposed or oxidized into small molecules, and finally decomposed into carbon dioxide and water.