Labeling for genetically modified (GM) agricultural products is used to indicate that the products contain GM ingredients, or are produced from genetically modified organisms (GMOs). Nowadays the global expansion in the development and application of GMOs attracts more and more attention on labeling regulations for GM agricultural products. This paper provides an overview of the development of labeling policies for GM agricultural products in European Union, Canada, Japan, Korea and other major counties or regions. Characteristics as well as pros and cons of these different labeling systems, including production process-focused labeling, finished product-focused labeling, voluntary labeling, mandatory labeling, quantitative labeling, qualitative labeling, complete labeling and catalogbased labeling, are summarized. This paper also analyzes the policies of labeling exemption and negative labeling for non-GMO foods in the world. This analytical review provides useful information to improve labeling regulations for GM agricultural products in China.