Abstract: This study aims to explore the characteristics of yield components of hybrid rice‘Tianyouhuazhan’ cultivated as early, middle, and late season rice in south China. According to the results of regional trials of ‘Tianyouhuazhan’in early, middle, and late season, correlation analysis between yield and yield components, and among yield components was conducted, and path analysis between the yield and yield components was also carried out. Results showed that: (1) the contribution of per spike grains, spike numbers per hectare, seed setting rate and thousand seed weight to the yield was 55.7%, 22.7%, and 11.3%, and 4.1%, respectively, in early season; (2) the contribution of per spike grains, spike numbers per hectare, seed setting rate and thousand seed weight to the yield was 43.4% , 45.0% , 6.7% and 1.2% , respectively, in middle season; (3) the contribution of per spike grains, spike numbers per hectare, seed setting rate and thousand seed weight to the yield was 44.1%, 16.8%, 29.4% and 3.7%, respectively, in late season. In conclusion, the high yield of this variety could be obtained by breeding big spike in early season, by breeding big spike and abundant spike number in middle season, and by breeding big spike and increasing seed- setting rate in late season, respectively.