目前，GPS系统不仅在全球的应用越来越广泛，而且在最近的几场局部战争中也起到了非常重要的作用，因此有必要对GPS的对抗进行研究。本文首先简要介绍了GPS系统的基本组成，然后针对各个组成部分提出了针对性的对抗措施，并重点探讨了对GPS用户接收系统的干扰方法。-At present, the GPS system not only more and more popular around the world, but also played a very important role in the recent local wars, so it is essential to research the GPS confrontation. Firstly, this paper describes the basic composition of GPS system briefly, and then proposes the countermeasures targeted to the various components. Finally, introduce to the interference method which focuses on the GPS receiver.