Abstract: Cross compatibility,fertility,growth performance of hybrid seedlings,cutting production of ortet in scion plucking nursery rooting ability of hybrid cuttings treated with various concentration of IBA in sand and wood dust media under full light mist irrigation condition of different cross combinations between Larix kaempferi and L. olgensis were studied in Liaoning and Jilin provinces from 1994 to 1998. Survivor percentage and growth of rooted cuttings after being transplanted in nursery of different combinations were also studied. In general,there is no difficulty to get larch hybrid,yet cross compatibility and growth behavior of hybrid of different combinations differed for different combinations. Though there were obviously difference in rooting ability among cross combinations and ortets but cuttings taken from young hybrid ortets were easy to root. Each of 2.5～3.5 year old ortet might derive 13～27 two year old plantlets (ramet) on average for planting. Based on the results obtained,a new strategy is proposed for mass production of genetically improved hybrid larch:i.e.is to produce hybrid seeds of best general or special combinations by artificial pollination and to multiply the scarce improved hybrid by vegetative propagation.