The combining ability for 9 agronomic characters was studied with 5 male sterile lines and 7 restorer lines by the way of p譹 incomplete diallel cross (NC Ⅱ) design. The main results were as follows：C815S had wider compatibility and stronger combining ability.The average seed set rate of F1 between the cross of C815S and IR26,Nanjin11,Balila and Qiuguang was 81%,and showed excellently wide compatibility. The general combining ability(GCA) of C815S was best compared with dual-purpose genic rice male sterile LongS, 7guang S052,Peiai64S and CMS LineⅡ-32A.The GCA of the effective tillers number, total grain number, grain density, yield per plant and economic coefficient of C815S was 6.656, 6.342, 7.236, 16.669 and 6.705, respectively, and ranked at the first in the examinated dual-purpose male sterile lines. The GCA of the seed setting rate and 1000-grain weight was 0.329 and 2.353, respectively, and ranked the 2nd. Meanwhile, the GCA of plant height was -2.197, and ranked the fourthly. According to the GCA performance, C815S was fitted to breed hybrid rice combination with high yield and lower plant height. C815S in the effective spikes, grain density, 1000-grain weight, single yield, the economic factor of 5 traits were classfied class Ⅰ; and were classfied Ⅱ type in per panicle, seed setting rate of two traits; and were classfied Ⅳ type in plant height, Spike Length. So C815S is an ideal parent, in particular, which fit breeding objectives of the preparation of the height types of partial short combinations .