Hybridization using green foxtail(Setaria viridis sub.viridis) accession N10 as maternal line and foxtail millet(Setaria italica) landrace Daqingjie as paternal line was made and three hybrid plants were obtained.The hybrid plants showed intermediated morphological development in plant height,stem diameter,length of panicle and the number of tillers.But the pollen development of the hybrids was abnormal and aborted pollens were observed in the anthers.Micro-observation showed that the hybrid microspores were restricted to development among the single-nuclear to mature pollen stage.But the pistils of the hybrid plants were normal and could easily fulfill fertilization with pollen from other lines and seed setting was nearly normal.Back-cross and hybridization with other foxtail millet cultivars were successfully carried out for foxtail millet cytoplamic male sterile line development.