China has a lot of cultural heritage,in order to be able to successfully declare a world cultural heritage,it is necessary to accurately understand and explain the outstanding universal value of and the heritage.The analysis of the foreign and domestic literature,and the comparison with the past evaluation work of the value of the cultural heritage for the application for world cultural heritage,are used for reference,in the study of the Grand Canal application for world cultural heritage,so as to explore and improve the method of the evaluation and analysis.The outstanding universal value (OUV) assessment of cultural heritage and determine action of the composition of the heritage is the basic core to declare world cultural heritage.This article describes methods of analysis and the assessment of the OUV of the cultural heritage,which provides a reference for future study.