目的 综述国内外生物可降解塑料共混改性的常用策略，为高品质生物可降解塑料的工业化开发提供思路与理论方法。方法 共混改性是高分子材料改性的常用策略，因其具有高效、经济的特点而被广泛采用，本文针对生物可降解高分子材料增韧共混改性策略，选取聚乳酸(PLA)、对苯二甲酸-己二酸丁二醇酯(PBAT)、聚丁二酸丁二醇酯(PBS)作为对象，对增韧共混改性研究现状进行归纳、总结和分析，同时对比各自的增韧改性效果及优点和不足。结论 以生物可降解塑料取代不可降解塑料可以在很大程度上缓解当前的环境污染问题，在未来地膜和包覆材料中具有广阔的应用前景。

The work aims to review the commonly used strategies for blending and modifying biodegradable plastics at home and abroad, and provide ideas and theoretical methods for the industrial development of high- quality biodegradable plastics. Based on the fact that blending modification was a commonly used strategy for polymer material modification, which was widely adopted due to its high efficiency and economic characteristics, this article focused on the biodegradable polymer materials. Poly (lactic acid) (PLA), butylene terephthalate (PBAT), and polybutylene succinate (PBS) were selected as objects to summarize, conclude and analyze the current research status of toughening blending modification. At the same time, the toughening and modification effects, advantages and disadvantages of each were compared. In conclusion, replacing non degradable plastics with biodegradable plastics can greatly alleviate current environmental pollution problems. It has broad application prospects in future plastic films and coating materials.