The work aims to establish a component separation and identification method of biodegradable plastic products to deal with the blank of rapid component analysis methods of biodegradable plastic products at home and abroad. In this work, a rapid component analysis method of biodegradable plastic products was established through infrared spectroscopy (FTIR), differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). FTIR and DSC were used to identify resin components, FTIR and TGA were used to identify filler components, and a rapid component analysis method for biodegradable plastic products was established Through this research, rapid component analysis of biodegradable plastic products is carried out. It provides quality control technical services for the majority of enterprises, and provides regulatory technical support for regulatory authorities, which has important practical significance.