Abstract: The paper aims to objectively evaluate the solar energy resource potentiality. The authors used the global radiation data of two radiation stations of Hailar and Fuyu in 1985-2014, and the sunshine data of other 15 stations in Hulunbuir, adopted solar energy resource assessment method and standards to calculate the global solar radiation of non-radiation stations in Hulunbuir, analyzed spatio-temporal distribution features of global solar radiation, and calculated various parameters of solar resources in Hulunbuir. The results showed that: the solar energy resource was very rich or abundance, stable or relatively stable in most areas, and had more days for development and utilization in Hulunbuir, especially in the western and southeastern regions.