In order to learn the combining ability of Long S newly registered dual-purpose genic male sterile rice, 12 combinations from crossing of Long S, Y58S and Guangzan 63S with 4 elite restorer lines were tested. The results showed that：1)Grain weight per plant( GWP)of the hybrids of Long S has a significant increase over the check because of greater advantages in spikelets per panicle （SP）,over the hybrids of Y58S mainly because of increasing in 1000-grain weight (TGW),over the hybrids of Guangzan 63S mainly because of increasing in panicles per plant（PP）.2) The general combining ability (GCA) of Long S was better than that of Y58S and Guangzhan 63S in GWP, PP, SP and biomass. 3)The hybrids of Long S had greater variance of special combining ability(SCA) in PP, SP，TGW ，seed setting percentage，grain pumped degree and biomass.