The major advances in the researches on the relationship between the Eurasia snowcover and Asian monsoon are summarized. The varying area and thickness of the Eurasia snowcover can exert remarkably influences on the thermal characteristics and hydrologic processes of the land surface, and thus influences the onset and development of Asian monsoon. It is generally thought that there is an inverse relationship between Eurasia snowcover and Asian monsoon, in both diagnostic and model researches, but the relationship is very complex, including interannual or decadal variability. Snowcover in different regions and seasons has different impacts on the monsoon, and some factors such as ENSO, NAO can also affect the relationship. There exist still many differences and questions in the present studies of the relationship between snowcover and monsoon, as well as the mechanisms that how snow influences climate.