以５１４份黄大豆品种为试材，分４个熟期组对大豆完全粒率、百粒重、虫食粒率、褐斑粒率、紫斑粒率与脂肪含量进行了相关和逐步回归分析。结果表明：对脂肪含量影响最大的是褐斑粒率，４个熟期组均呈显著或极显著负相关，均有显著的回归线性效应．其次是完全粒率，４个熟期组均呈显著或极显著正相关，２个熟期组有显著的回归线性效应．百粒重、虫食粒率、紫斑粒率与脂肪含量的相关系数很小，对脂肪含量影响不大。 514 yellow soybean cultivars were used as materials to analyze the complete grain yield, 100-grain weight, pest-eating rate, brown speckle rate, purple speckle rate and fat content in 4 ripe stage groups. The results showed that the most influential factor on the fat content was the brown speckle rate, and the four ripening groups showed significant or extremely significant negative correlation with significant regression linear effects. Followed by the complete grain rate, four maturity groups were significantly or very significant positive correlation, two maturity group significant regression linear effects. The correlation coefficient between 100-grain weight, worm food grain rate, purple speckle content and fat content was very small, and had little effect on fat content.