Effects of some influential factors on stability of soybean milk were studied in this article. Results indicated that the best mulsification stabilizers were GMS (0.15%), SE (0.10%), carrageenan (0.05%), and CMC (0.05%). Order of factors that effected soybean milk flavor was as follows: milk powder>sucrose>essence. The best milk powder content, strawberry essence dosage and sucrose concentration were 2%, 2 mL and 10%, respectively.