Abstract:The breeding test,based on material of 25 family seeds of Fraxinus mandshurica Rupr provided by Dailing Forestry Research Institute in Heilongjiang Province,was carried out successfully.The test was conducted in the nursery located at the high~altitude 1 700 m,in Gaoyanzi State-owned Forest Farm in Jianshi County,Hubei Province.The results show that the differences of various families in sprouting are larger,especially in height and diameter after two-year-old growth,of which 7 807 families stood out during the seedling period.