Based on the all-factors method, Masson pine wood would be degreased in the superheat 5% ethanol solution in order to get a ideal deresination technology. The results were following as: (1) The extraction mass is the most remarkably influenced by the extracting temperature. With the heighten of the temperature, the extraction mass increase; (2) The extraction mass is the most remarkably influenced by the extracting time. With the lengthen of the temperature, the extraction mass increased, and then decreased; (3) The extraction mass is th...