special type giant-embryo maintainer lines 813geB were obtained after irradiation on maintainers 813B. By back crossing 813geB lines with its corresponding A lines 813A，special type giant embryo CMS lines 813geA were developed. The special type giant embryo CMS lines 813geA had similar plant tapes、pollen fertility and yield components as 813A. 813geB lines had similar plant tapes as 813B lines. Compared with 813B, special type giant embryo B lines 813geB has an increase in the absolute and relative embryo weight of its brown rice, from 0.61mg to 1.36mg and 2.70% to 6.96%。813geB contains higher content of protein(9.77%) and lipid(5.28%).The contents of all 8 kinds of essential amino acids are higher than 813B. Crossing giant embryo restorer lines with 813geA and giant embryo hybrids were developed.