This research was carried out at the Maize Researches Department of General Commission of Science Agriculture Research (GCSAR), Damascus, Syria, During the growing season 2010 to study general and specific combining ability and the behavior of the inheritance of plant height, ear height, yield per unit area, ear length and ear diameter in sweet corn by the use of half diallel crosses of five selected sweet corn inbred lines (IL.1037-08) P1, (IL.1062-08) P2, (IL.1049-08) P3, (IL.209-08) P4 and (IL.1065-08) P5