|Soybean meal was used as raw material to prepare environmentally friendly adhesives. Soybean#br# meal gum was modified by toluene diisocyanate. Soybean meal-toluene diisocyanate adhesive was used to press the packing boards of Changbai mountain smelly pine (Pinus sylvestris var. changbaishanensis), and the bonding strength of the boards was analyzed. The results showed that the optimum process parameters obtained by orthogonal test were 150 g water, 25 g modifier and 5 g hydrochloric acid. The adhesive strength can meet the#br# requirements of GB/T 9846—2015 standard.