The heterosis of pepper were very obvious,and the hybrids were large-scalely applied to commercial production followed tremendous economic and social beneficial results.However，the output cost of pepper’s hybrid were higher,but also the prurity could not be ensured because of manual emasculation and pollination.But these difficulties could be solved using male sterile line.In this experiment，not only the propagation of pepper cytoplasmic male strerile line,maintainer line and restorer line,but also the hybrid seed production technique were studied.Some other fields were also innovated and improved,such as soil disinfection on seedbed，seed treatment,field management,hybriding pollination,and so on.These series of measures could ensure seeds’ quality,reduce the output costs,and improve the competitive ability of hybrid seeds in market.