Plasticizer, plastic composition and plastic product

The invention provides a plasticizer, a plastic composition and a plastic product, and the plasticizer is an amino acid derivative and has biodegradability. The plasticizer comprises a central structure and a side chain structure, the central structure is asparaginic acid, the side chain structure comprises a first side chain structure and a second side chain structure, the plasticizer has a structure as shown in a formula (I), and each symbol in the formula (I) is as defined in the specification. Therefore, the plasticizer disclosed by the invention can reduce the damage to the environment and ecology through the biodegradable characteristic, and the plasticizer without a phthalate structure is designed, so that the plasticizer has excellent safety to prevent the plasticizer from influencing the normal physiological function. Furthermore, the asparaginic acid has the characteristics of biodegradability and biometabolism, so that by designing a chemical structure based on the asparaginic acid, better safety c