The invention relates to an 
eucommia bark processing method, which comprises the following steps that (1) raw medicinal materials are taken; impurities, foreign matters and non-medicinal parts in the medicinal materials are picked out; the rest materials are put into a clean container; and the 
impurity content is less than or equal to 2.0 percent; (2) according to the proportion that a 
mass ratio of 
eucommia barks to fresh ginger is 100:(12 to 20), the fresh ginger is firstly squeezed to obtain ginger juice; then, water is added for 
dilution to reach the 
mass being 1.5 to 2.5 times of the original 
mass; then, the ginger juice is added into the 
eucommia barks; uniform stirring is performed; the mixture is fully moistened; and the content of the non-moistened eucommia barks is less than or equal to 10 percent; (3) after the ginger juice is completely absorbed; the mixture is put into a stir-frying container and is stir-fried for 15 to 25 min by strong fire at 150 to 250 DEG C; and the mixture is taken out; (4) the mixture is dried or put into an 
electric heating constant temperature blasting 
drying box; and the 
drying is performed at the temperature of 60 to 70 DEG C; and (5) 
powder is sieved away by a pharmacopeia 
sieve, and the 
powder content is less than or equal to 3.0 percent. The contents of 
pinoresinol diglucoside and extracts in ginger and eucommia 
bark products conform to pharmacopeia standards; and the efficacies of warming and invigorating 
kidney yang, invigorating the 
spleen and the 
stomach and strengthening the bones are achieved.