The global navigation satellite system and its application fields are extending and deepening .Big coun-tries are actively developing their own satellite navigation system .The current status and future plans of GPS ,GLONASS, Galileo,BDS,QZSS and IRNSS were introduced briefly .The compatibility and interoperability of GNSS was analyzed . Finally,several enlightenment was drawn .%全球导航卫星系统及其应用领域在不断地扩大和深化，世界各大国都在竞相发展自己的卫星导航系统。简要介绍了GPS、GLONASS、Galileo、BDS、QZSS、IRNSS的发展概况，探析了它们之间的兼容和互操作性，最后得出了几点启示。
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