The ovarium is hypostasy in Camptotheca acuminate Decne.. It has a locule and an ovule. The ovule is pendulous, anatropous andunitegmic. The ovule of Camptotheca acuminate Decne. is pseudocrassinucellate ovule. The development of embryo sac is polygonum type. Cytokinesis during the meiosis of microspore mother cells is of simultaneous type. The arrangement of microspores in tetrad is tetrahedral and isobilateral. One-nucleate microspore is triangle. Maturity pollen is triangle, circular and square. This paper mainly studied the megasporogenesis and microsporogenesis, and studied the development of their female and male gametophyte in Camptotheca acuminate Decne., and preliminarily discussed the cause of the part pistil abortion in Camptotheca acuminate Decne.