本文首先对比分析了珠三角和长三角服务贸易的发展现状，在此基础上分别运用贸易竞争指数、显示性比较优势指数和Lafay指数对比分析了珠三角和长三角服务贸易的国际竞争力。结果表明：珠三角地区整体服务贸易国际竞争力强于长三角地区，且两地具有竞争优势的部门均集中在如旅游、运输、建筑等传统服务贸易部门，而技术密集型、知识密集型等现代服务业部门的国际竞争力则较差。针对上述结果，提出了相关的政策建议。
Firstly，the article analyzes the current situation of the Pearl River Delta and Yangtze River Delta’s trade in services. On this basis，we use trade competitiveness index（TC index），revealed comparative advantage index（RCA index）and Lafay index analyze the International competitiveness of trade in services of the Pearl River Delta and the Yangtze River Delta. The results show that the International competitiveness of trade in services of the Pearl River Delta is stronger than the Yangtze River Delta’s. Both regions have competitive advantages in traditional services sectors，but both of them have the opposite results in modern services trade sectors. In response to these results，we propose some policy recommendations.
