Combined with characteristics of winter-warming and energy-saving solar greenhouse in Xining region,variety comparative test of five new varieties the sowing time of winter-crosing summer squash were studied.The results showed that ‘Dongying’ and ‘Meiguolyuxiu F1’ were high yield,cold resistance,strong growth and strongly branching,et al.Suitable for plant of winter-warming solar greenhouse the sowing time of winter-crosing in Xining region.