Some field experimental results have shown that the moving sands or dust aerosols in nature are usually electrified,and those charged particles also produce a strong electric field in air,which is named as wind-blown sand electric field.Some scholars have pointed out that the net charge on the particle significantly enhances its electromagnetic (EM) extinction properties,but up to now,there is no conclusive research on the effect of the environmental electric field.Based on the extended Mie theory,the effect of the electric field in a sandstorm on the EM attenuation properties of the charged larger dust particle is studied.The numerical results indicate that the environmental electric field also has a great influence on the particle’s optical properties,and the stronger the electric field,the bigger the effect.In addition,the charged angle,the charge density,and the particle radius all have a specific impact on the charged particle’s optical properties.