Abstract: Seedlings of Cucurbita moschata Duch. with three true leaves were put in the darkness under low-temperature of 25/15℃(day/night),15/10℃,10/5℃,5/0℃ for 24 hour;and the electric conductivities of treated seedlings were measured to study the adaptability of the Cucurbita moschata Duch. to low temperature stress.The results show that the electric conductivity measured after the leaves are leaked for 60 minutes is typical.And the electric conductivity of leaves under 5/0℃ treatment can be used to distinguish the adaptabilities of different materials,indicating that 5/0℃ is the lowest growing temperature of Cucurbita moschata Duch.The adaptability varies among different varieties,and materials No 344,360,151 can be applied in the future.