In order to further clarify the path to high yield cultivation techniques for Yongyou 8, a hybrid late season japonica rice line, we selected 65 sets of data from 11 sites in Zhejiang and Jiangsu Provinces between 2005 and 2011, analyzed profiles of panicle, kernel and weight in Yongyou 8. Through correlation, regression and path analysis, a technical strategy has been proposed for high yield Yongyou 8 cultivation: appropriate control of the number of effective tillers, focus on large panicles, with appropriate attention to seed setting rate and kernel weight.