In order to study the impact of Saihanba forest farm on Beijing sandstorm, this paper first establishes the ecological environment evaluation model of Saihanba forest farm, and compares the environmental conditions before and after the restoration of Saihanba forest farm. Secondly, the evaluation model of dust storm in Beijing is established to observe whether the phenomenon of dust storm in Beijing has been improved after the completion of Saihanba forest farm. Explore whether the establishment of Saihanba forest farm is related to the improvement of dust storms in Beijing.