中文摘要：

本文采用Feenstraand Romalis（2014）的方法测算了一国贸易产品的质量水平，并通过实证研究发现：1）司法质量和出口质量正相关，但司法质量更高的国家在出口合约密集型产品上并不具有质量意义上的比较优势；2）司法质量更高的国家在进口合约密集型产品上具有质量意义上的比较优势；3）进口国司法质量是影响合约密集型产品相对贸易质量的重要因素，而出口国司法质量则主要影响合约密集型产品的相对贸易数量。

英文摘要：

This paper estimates country - level quality for each tradable good using Feenstra and Romalis （2014） approach and provides empirical evidences that： 1 ） judicial quality is positively associated with average export quality, but a country with higher judicial quality does not exhibit comparative advantage in exporting contract - intensive goods in terms of quality; 2） a country with higher judicial quality does exhibit comparative advantage in importing contract - intensive goods in terms of quality; 3 ） importer＇ s judicial quality is a key determinant of relative quality of trade for contract - intensive goods, while exporter＇ s judicial quality is more relevant for relative quantity of trade for contract - intensive goods.