This study was carried out through the cooperation between the Faculty of Agriculture Tishreen University and the General Commission of Agricultural Scientific Researches in Hama during 2013 and 2014 successive seasons. Eight soft wheat(Triticumaestivum)genotypes were crossed using half diallel method .The(28) crosses were grown along with their parents in randomized complete block with three replications to estimate general combiningability , specific combining ability, and both mid and high parent heterosis for number of spikes /plant , number of grains /spike , thousand grain weight and grain yield. The results indicated that both additive and non- additive types of gene action were important in the inheritance of traits under study with preponderance of additive gene effects for number of grains /spike and thousand grain weight,Non – additive gene effects were pronounced in the inheritance of number of spikes /plant and grain yield. High general combiners for thesecharacters were obtained and the most important parents were: Bohouth 4- Douma 44828-Acsad1115- Golan2. Many positive specific combiners having both mid and high parent heterosis and derived from positive general combiners were obtained such as(Golan2×Cham10) – (Acsad1115×Douma4)(Douma44828×Golan2) and (Douma 2×Golan2). Results also indicated that some hybrids: (Douma44828×Golan2) (Bohouth6×Douma4) (Douma44828×Cham10) (Douma2×Acsad1115) had heterosis compared to higher parent for number of spikes /plant , number of grains / spike , Thousand grain weight and grain yield..