The study was carried out in Gongzhuling, Jilin province, 1987. Two full diallel crossing sets （excluding reciprocals） were made from eight 6-rowed and five 2-rowed barley varieties reap. Combining ability affects and variance for total yield/10 Plants, 1000-kernel weight, plant height, fertile tillets per plant, spike length, kernels per spike, weight per spike and heading date were calculated accordiag to model I, Method Ⅱ of Griffing. Both additive and non-additive gene effects controled the expression of most testing characters The highest values of heritability in broad sense of Plant height and heading date were presented both in 6-rowed and 2-rowed varieties. The highest heritability value in narrow sense of plant height was found in 6-rowed barley followed by wt. per spike, kernels per spike, heading date, spike length, tillers per plant and yield. spike length had highest value in 2-rowed barley followed by kernels per spike, plant height, heading date, Yield and tillers per Plant.