Abstract: The study aims to understand the whole plant yield and quality of silage maize in different organs and the relationship between the organs and improve the efficiency of selection, provide theoretical basis for breeding high yield and high quality silage maize varieties. This field experiment was conducted to elucidate the correlation of the radio of different organs to total weight and the yield and quality in silage maize (Zea mays L.) with thirty-one silage maize cultivars or lines as materials. The variation of total dry matter weight, dry matter weight of different organs, water content, yield and quality was significantly different. The correlation analysis results indicated that the radio of stalk, leaves (r2=0.528**) and bracts to total weight had positive correlations with total water content and yield, while the radios of kernel and cob to total weight had negative correlations with total water content and yield. Proportions of stalk (r2=0.396*), bracts, and cob in total dry matter were positively correlated with neutral detergent fiber content, while proportions of leaves and kernel (r2=0.381*) in total dry matter were negatively correlated with neural detergent fiber content. Total quality ratios of stalk and bracts to total dry matter and the whole plant acid detergent fiber content were positively correlated, while the ratios of leaves, kernels and cob were negatively correlated with total dry matter and the whole plant acid detergent fiber content. Total quality ratios of stalk, leaves and bracts to total dry matter and crude protein content were positively correlated, while the ratios of kernels and cob (r2=0.660**) were negatively correlated with total dry matter and crude protein content; Proportions of Stalk (r2=0.407*), leaves and bracts in total dry matter were negatively correlated with whole plant starch content, while proportions of kernels (r2=0.359*) and cob were positively correlated with whole plant starch content.