The combing ability of 7 main agronomic characters was analyzed in this paper with NC II device in the Cytoplasmic of Chinese sorghum and Al Cytoplasmic The results indicated as follow: The general combing ability was controlled by nucleus gene, but Cytoplasmic gene affected the expression of nucleus genes. The combing ability of most characters were not affected significantly by the Cytoplasmic of Chinese sorghum, but if could increase the diversity of Cytoplasmic, and detract the genetic weak.