Large-area grain producers adopt mechanical transplanting cultivation in double seasons rice, would aggravate the contradiction of late season rice varieties in Yongkang city, Zhejiang Province. 7 new double cropping late rice varieties of indica and japonica hybrids which suitable for mechanical transplanting and cultivating locally were screened in this experiment. The suitable sowing dates were also provided. This result will guide large grain producers to achieve high yield for late rice.