Effects of lipoxygenase (LOX) on gelling properties of soybean protein isolate (SPI) were discussed in this paper. It’s the first time that connected these two aspects together in the abroad and domestic researches. In order to attain high LOX activity in soybean flour, hexane was used to remove the oil from flour, and all the procedure was under room temperature. Different LOX activity DSF was obtained by dry heating at 100℃. SPI was extracted by alkali extraction, and the gelling properties s...