Sandstorm is a disastrous weather phenomenon with the interaction between wind and sand, and its formation is inextricably related to Greenhouse Effect of the earth, El Ni n o phenomenon, sharp forest decline, vegetation destruction, species extinction, climate anomaly and so on  Among them, excessive exploitation of natural resources, excessive felling of trees and over-reclamation of land caused by population expansion are the main causes of sandstorms  As a kind of high-intensity wind-blown sand disaster, sandstorm can not occur in all windy places  Only those areas with arid climate and sparse vegetation are likely to have sandstorm  The floating soil on the surface of bare land is easy to be swept up by a big storm to form a sandstorm or even a strong sandstorm  Sandstorms are no less harmful to people, animals and buildings than typhoons and tornadoes
In recent years, the northwest region has suffered from sandstorms many times
 In recent years, sandstorms have occurred in Northwest China and even Northeast China, especially in Northwest China, which have been ravaged more than 20 times