This paper reviewed the recent research progresses in NO emission from agricultural soils, including formation mechanism of NO, collection and measurement methods, emission amount, main influence factors on NO emission, and mitigation practices for NO emission. On this basis, it is suggested that during a future period investigation on NO emission from agricultural soils in China should be still focused on production and emission mechanism of NO, quantitative correlation between main influencing factor and NO emission, estimation of NO emission in different areas by means of modeling NO emission from agricultural soils. Some optimum practices for reducing NO emission were also proposed in this paper.