The invention discloses a method for quickly treating outdoor collected forest nursery stocks of forest germplasm resources. The method includes: using liquid paraffin to quickly smear nursery stocks collected from trees. Annual nursery stocks which can be grafted are trimmed down by using a long-reach chain saw or hand shears, leaves are quickly cut off by using hand shears, the nursery stocks are cut well according to length of scions supportive of grafting, the liquid paraffin is uniformly smeared on the scions quickly, and using amount of the liquid paraffin meets the condition that branches are uniformly wrapped. The liquid paraffin is adopted to wax-seal the forest nursery stocks, preservation degree is high, the problem of water loss of the nursery stocks is solved, and survival rate of same grafting treatment reaches higher than 90%.