Microsporogenesis and male gametophyte development of Caragana korshinskii Kom.were observed by traditional paraffin sections.The results showed that:(1)The anther had four chambers;the development of anther wall was the basic type,which consisted of epidermis,endothecium,middle layer and tapetum.The epidermis consists of one layer of cells and still existed as the anther matured.The endothecium developed banding-shaped thickenings when the anther matured.The young anther wall had 1~2 cell middle layer and degenerated when maturity of the anther,the tapetum was of glandular type.(2)Cytokinesis occurred simultaneously with meiosis in a microspore mother cell,and the tetrads were mostly tetrahedral while some were symmetrical.(3)The mature pollen grain was of binuclear type.With scanning electronic microscope (SEM),the mature pollen grains were observed,which appeared spherical in shape,and the exine was almost smooth.(4)Some of the tetrads generated by microspore mother cell had more than one nucleolus whose number changed from two to six,it may relate to the incomplete fuse of nucleolus in telophase two.These results suggested that microsporogenesis and male gametophyte development of C.korshinskii Kom.were normal.These observed results provided base materials for the reproduction biology and provided theoretical ground for exploitation and utilization of C.korshinskii Kom.