The invention discloses a secondary cutting propagation method for quercus nuttallii. The method includes the steps: soaking and dipping cuttings of the quercus nuttallii in indoleacetic acid for 10-30s; dipping rooting power; cutting the cuttings of the quercus nuttallii into ground substances; moving the cuttings into rooting soak solution from the ground substances to soak after 30-40 days; performing secondary cutting after soaking to obtain seedlings of the quercus nuttallii. Compared with the prior art, according to the method, the rooting rate of the cuttings of the quercus nuttallii can be improved about 80%, and a propagation coefficient of the quercus nuttallii is greatly improved. The method has the advantages that the method is simple, easily practicable, low in cost and the like, and the method is suitable for large-scale popularization.