Abstract: Digital breeding comes out for the assistant of plant breeding based on modern computer and network technology by the dynamitic management of widely collected breeding data resources. It can greatly improve the breeding efficiency by the automatically analysis of huge information, to compute genetic diversity among the materials, to classify genetic group, to predicate the heterosis between the purity lines and to give intelligent suggestions to the breeders. Any environmental factors, scientific research development in biological and genetic development, breeders’ experiences, and field-test results of crosses etc. should be integrated into the digital breeding system.