Abstract: New combination Liangyou Peijiu was selected by introducing 33 hybrid rice combinations and comparing test on 9 groups of single cropping late hybrid rice combinations in 6 testing sites. Moreover, the characteristics of Liangyou Peijiu grown as single cropping in Taizhou was made clear. The study on constitutions of panicle,grain and grain weight in different yield levels of Liangyou Peijiu was conducted by path analysis. The high-yielding and high-resulting cultural techniques were promoted.