Grassland animal husbandry is a coupled social, environmental and economic system which is interrelated through complex interaction between climate, soil, grassland, livestock and management institutions. Grassland animal husbandry not only provides meat and dairy products to people, but also generates variety of significant ecological system services. However, grassland animal husbandry is also a major source of greenhouse gas (GHG) emissions, and how to mitigate GHG from animal husbandry has become a focus of current climate change study. In this article, we reviewed the published studies on grassland animal husbandry GHG emissions, and pointed out three shortages of current studies. First, although life-cycle evaluation method has been widely used to measure GHG emissions from livestock production, there still existed shortages and debates, particularly in terms of whether the external variables and soil organic carbon should be considered? How to select indicators to measure the level of GHG emission from livestock production? Second, few studies have focused on the impacts of mitigation measure at single stage on the overall GHG emission reduction of grassland animal husbandry; Third, current studies mainly focused on the impact analysis from ecosystem, while ignored the impacts from social system, which led to poorly describe the feedback mechanism between social and ecological system. Based on the review, we recommend the following topics for the future studies:1) Improving the life-cycle analytical framework and methods for measuring GHG emission from grassland animal husbandry; 2) Enhancing the comprehensive evaluation of single GHG mitigation measures on whole reduction effectiveness of grassland animal husbandry; and 3) Analyzing the mechanisms influencing GHG emission intensity from the coupled social-ecological system perspective. We believe that this review would help more in-depth understandings GHG emissions from grassland animal husbandry, and have more effective policy implications for low-carbon livestock production system. In addition, it also provides new insights on how to manage grassland ecosystems sustainably and restore grassland ecosystems.