Abstract: In order to realize information shared in the polyester product chain,an information shared model of polyester product chain was constructed.The characteristics of the polyester product chain were analyzed in respect of product attributes,trading mode,partner relationship.Based on the classification of the information of the polyester sector,two kinds of information shared models,i.e.,point-to-point and centralized management have been taken into consideration.And the information shared model of polyester product chain was established.An indepth analysis of the data integration of the model was conducted,and its solution was developed based on XML and XML Schema.Application of this model can improve the ties between polyester enterprises and promote the harmonized development of the polyester industry.