30 North China types of cucumber at three-leaf and one apice stage were used as experimental material in the test and they were treated under the low temperature stresses for 8 days when the light intensity was 70001 x,day/night temperature of 12℃/6℃.The result showed that according to the clustering analysis of chilling injury index,conductivity,value of free water/bound water,3,9,11,16,17,18,19,20,22,23,25,26 and 27 were chilling-sensitive materials,1,2,4,5,6,8,10,12,13,15 and 17 were weak chilling-resistant materials,and 14,21,24,28,29 and 30 were high chilling-resistant materials.For chilling injury index,conductivity,free water content,value of free water/bound water,the relation was chilling-sensitive＞weak chilling-resistance＞high chilling-resistance;and for bound water content,the relation was chilling-sensitive＜weak chilling-resistance＜high chilling-resistance.