With the development of network technology and the speed of economic globalization, e-commerce has achieved vigorous development, cross-border electricity is especially rapid development, the number of web sites is growing fast, types and functions are powerful. So user experience of e-commerce site become more attention from the researchers, usability research become one of the main ways to promote and improve the user experience. This work selected usability indicators for cross-border e-commerce sites. Analysis the evaluation purpose and the establish principles and methods of index system, based on the in-depth and meticulous research of evaluation index system, establish scientific and reasonable evaluation index system and choose evaluation method. Then design experiment, acquire and preprocess of the data. Finally verifies the validity of the selection index, and provides a quantitative and objective method for evaluating the usability of the website.
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