This study aims to analyze the frequency of Asian dust occurrences and the factors related to dust rises in the source region using the MODIS Land Cover data, WMO SYNOP data, and climate index data. All dust rise cases at sites which experienced more than 20 time dust rise events during the 21 years from 1997 to 2017 are analyzed. The most frequent dust rise occurred over the barren region followed by grasslands and croplands. It is found that the frequency of Asian dust events is positively correlated with the number of days on which wind speed exceeds the threshold value. It is also found that the number of days over the threshold wind speed in the barren region is negatively correlated with the wintertime North Atlantic Oscillation (NAO) and that the number of days over the threshold wind speed in grassland is negatively correlated with the El Niño/Southern Oscillation (ENSO) in spring.