Abstract: The hybrid rice of high yield Ⅱ You 3003 is Yibin Region Agricultural Research of Sichuan in 1999 does not give birth to department with 3 departments Ⅱ-32A，It is that suitable extensive 3003 groups matches to resume with the high quality heavy type winner of ear of grain and become。In 2002 attends Sichuan Xian late deeply B group district examination，Average output 8.49t/hm2，Than for shine Shan You 63 increases production 5.91%，House testing the first place；In 2003 attends Sichuan province Xian late deeply A1 group district examination, Average output 8.246t/hm2，Than for shine Shan You 63 increases production 3.92%，Attend Sichuan province production in the same year to test, Average output 8.664t/hm2，Than for shine Shan You 63 increases production 9.31%。It is good that this combination has type，Divide into Nie Li and winner，Produce highyield steadily，Excellent quality is disease-resistant，Adaptability waits for characteristic well，Those that meet the south rice district of our country level dam and hills district and Shan the 63 kinds of good local plantation planted。