Abstract: Based on the application of the gray correlative analysis, the gray correlative degree between eight agronomy properties and yield of thirteen spring barley varieties in Tibet are calculated, in order to give a definite support to variety breeding and cultivation management of spring barley. It shows that the gray correlative degree between spike number per hm2 and yield per hm2 of spring barley is 0.6334, and respectively, grain number per spike 0.6957, and weight per 1000 grains 0.6394, and plant height 0.7088, and spike length 0.6955, and spikelet number per spike 0.7308, and invalid spikelet number per spike 0.6241, and growth period 0.6514. As a result, breeding and cultivation of spring barley varieties with bigger spike and higher stalk, and with increased spikelet and grain number per spike, probably will be the main task for us in the future.