In this paper, the authors summarized and concluded the research progress in litter accumulation of forest ecosystem in China based on literature review. The results showed that the current researches of litter accumulation are mainly focused on subtropical and temperate forests, with little attention put to the researches on tropical forests. Harvest is the main research method adopted now, but there is no unified standard for the quadrant layout, area and quantity as well as for sampling time. In a large scale, climate is the leading influencing factor affecting litter accumulation in forest ecosystems, and litter accumulation in forest of different climatic zones could be ordered as follows: temperate forest > subtropical forest > tropical forest. Forest litter accumulation is also influenced by origin, community development, community composition and structure, soil, terrain condition and interference. This paper also discussed the problems found in the research on forest litter accumulation in China under global climate change and explored the directions of future litter accumulation research.