The article provides an overview of properties and application of lac resin. Two methods used to modify lac resin were introduced and evaluated:chemical modification method using chemical reagents to react with the groups of lac resin,and physical modification method which included modification of the properties of lac resin film and modification of the physical states of lac resin. At the end of this paper, the future development direction of this environmental friendly material was prospected.%本文概述了紫胶树脂的特点和应用范围,并且分析和阐述了其化学改性和物理改性的方法和原理,在化学方面,利用各种化学试剂对紫胶树脂上的羧基、羟基、醛基等活性基团进行改性；在物理方面,对紫胶树脂的成膜性质和相态进行改进.展望了紫胶树脂作为未来绿色材料的发展前景和方向.
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