Abstract: Abstract: This paper reported the microsporogenesis, megasporogenesis, and development of the male and female gametophyte of Elaeagnus mollis observed by paraffin section technique to test whether there is any obstacle of reproduction in the process of sex reproduction. The results showed: 1) The wall of anther consisted of five layers: epidermis, endothecium, two middle layers and tapetum from surface to inside, and the tapetum was secretory type. 2) Cytokinesis during meiosis of the microspore mother cell was simultaneous type, and tetrads were tetrahedral, and occasionally decussate or isobilateral. 3) Mature pollen grain was 2-cell type with three germ pores. 4) The flower of Elaeagnus mollis was hypogynous flower. Ovules occurred at basal placentation. The ovule was anatropous, bitegmic and crassinucellate. 5) The embryo sac was of Polygonum type. The development of the most male and female gametophyte was normal.

Key words: Key words: Elaeagnus mollis, microsporogenesis, megasporogenesis, male gametophyte, female gametophyte