Solar radiation in Chinese arid and semi-arid areas varies seasonally, with higher levels in summer and lower levels in winter. The amount of water vapor in the air influences this variation, with arid areas showing more significant changes than semi-arid regions. Aerosol particles also play a role in affecting solar radiation levels. The highest solar radiation was recorded in an arid area called Linze, while the lowest was in the semi-arid area of Ansai. Overall, water vapor content and aerosol particles have a significant impact on solar radiation levels in these regions.