Hybridization in Cymbidium species was carried out between 10 varieties of Chinese orchid and 8 varieties of C.hybridum.The compatible index was calculated in different interspecific crosses.The results showed that:(1)The experiment designed 54 hybrid combinations,582 flowers were pollinated and 131 hybrid capsules were obtained,the average seed setting rate was 22.51%.The seed setting rate of cross between Chinese orchid×C.hybridum was 23.19%,which was higher than that of cross between C.hybridum×Chinese orchid(9.27%).(2)The cross-compatibility between C.sinense and C.hybridum was higher than that of between C.goeringii or C.ensifolium and C.hybridum.(3)There were higher incompatibilities between the Chinese orchid,and the seed setting rates of cross of three kinds of combinations were greater than 30%.The cross incompatibility was different between different varieties that ‘Lü′e’,‘Qihei’,‘Baimo’,‘Jinhe’and ‘Crescent’ were suitable for female parent,‘Dafugui’,‘Fugui’,‘Baimo’,‘Moon Shadow’ and ‘Black Pearl’were suitable for male parent.