Abstract: Sandstorm is a kind of serious disastrous weather and results in some disadvantageous impacts on industrial and agricultural production, traffic, people's daily life and air quality. In March 2010, 6 times of sandstorm weather occurred in China, including 1 time of severe sandstorm, 3 times of sandstorm and 2 times of blowing sand weather, which were more than those in the same period in recent ten years (4.2 times), and the sandstorm weather was characterized by the concentrated occurring period of time, late time of the first occurrence, vast affecting area, etc. The analyzed results show that, under the geographical background of climate change and sand sources, the main reasons of sandstorm occurrence were the temperature increase, infrequent rainfall, strong cold air current and strong Mongolian cyclone in March 2010.

Key words: sandstorm weather, meteorological condition, disastrous weather, climate change