Abstract:Guangxi Zhuang Autonomous Region is a subtropic monsoon climate. Plants are various and their blossom period are long. To prevent and cure the respiratory allergic diseases, we made an investigation on the diffusion patterns of airborne allergic pollen grains and spores and their allergization as well in Nanning. Our work paves a way for further similar researches in the south of our country. The relationship between airborne pollen quantity and the climate, the diffution patterns of various pollen grains and the pollen quantity of higher level and lower level are discussed in the present paper.