Degradable plastic is a kind of plastic that can be easily degraded in natural environment by adding a certain amount of additives (such as starch, modified starch or other cellulose, photosensitizer, biodegradable agent, etc.) in the production process. It is a kind of plastic that introduces easily dispersed groups, easily broken chemical bonds, easily broken chemical bonds in the chemical structure of new materials through new polymer synthesis technology Some components that can be swallowed by microorganisms are added into the easily transferred atoms or groups, or the molecular connection or the whole components. In this way, under the action of light, mechanical vibration or microorganism, the molecular chain breaks, the structure is destroyed, and then it is quickly decomposed in nature. It does not pollute the environment, can be recycled, and has the advantages of light weight, convenient processing, good packaging performance and easy surface decoration.

　　The research of degradable plastics began in the 1970s. In the past 30 years, degradable plastics have not only received special attention because of market demand, but also been questioned because of cost and practicability. It can be said that the road of degradable plastics is tortuous and long. Degradable plastic overcomes the harm of traditional plastics to the environment. It can decompose quickly in nature, does not pollute the environment, can be recycled, and has the advantages of light weight, convenient processing, good packaging performance and easy surface decoration.

　　According to the principle, degradable plastics can be divided into photodegradable plastics, water degradable plastics and biodegradable plastics. Different degradation methods have different products, but no matter which way, degradable plastics will not pollute the environment, which is why it is popular with many people. Since the advent of degradable plastics, not only improve our quality of life, but also play a certain role in protecting the environment.