中文摘要：

2012年是宇宙线发现100周年。本文简单介绍了宇宙线的发现历史和对其进行探测的主要实验方法和手段，并对代表性的重要物理结果作了描述。最后。从中国的特点出发详细介绍了ARGO-YBJ实验。

英文摘要：

In this paper, the history of cosmic ray discovery is reviewed, the different technique methods relating with its observation at different energy region are also briefly reviewed. Some typi- cal results of cosmic ray observotion are introduced, such as arrival direction and energy spectrum. The ARGO-YBJ experiment was described in detail.