Abstract: Abstract: Sort of both light and heavy dry-hot wind days , according To the different intensity of dry-hot wind . Define general index of Weather for the damage of dry- hot wind , through study weather course Of light heavy Dry-hot wind and study the types of light heavy dry-hot Wind . Give to the System mood that its shaped by dry-hot wind , Meanwhile, poses some defend measures , through explore the reason of Dry-hot wind and analyze the background of circulation