Eurasian snow cover is an important factor affecting the climate in the mid-high latitudes. A deep understanding of the characteristics and causes of Eurasian snow cover abnormal changes is of great significance for climate research and improvement of climate prediction. The current research focuses more on the interannual and interdecadal changes and climate effects of snow cover, while it is obviously insufficient for the understanding of the intraseasonal changes of snow cover. Based on the observation and reanalysis data, this paper discusses the intraseasonal variation of spring snowmelt in different regions of Eurasia continent and its related atmospheric circulation characteristics and surface energy evolution process through statistical diagnosis. The results show that the Eurasian spring snowmelt anomaly has obvious intraseasonal variation, with the dominant cycle of 10-30 days, and the intraseasonal signals mainly appear in the Scandinavian Peninsula, the Eastern European Plain and Western Siberia. Further analysis shows that the intraseasonal variation of snowmelt in Scandinavia may be related to the Scandinavian teleconnection negative phase (SCA-), and the intraseasonal variation of snowmelt in the Eastern European plain may be related to the Eurasian teleconnection negative phase (EU-). The intraseasonal variation of snowmelt in West Siberia may be related to Scandinavian teleconnection positive phase (SCA+). There are obvious differences in the causes of snowmelt anomalies in different regions. The increase of long-wave radiation may be the main cause of snowmelt anomalies in Scandinavia. In the East European plain and West Siberian region, sensible heat flux anomalies may be the main cause of snowmelt anomalies.