When the raw materials have been sent to the hopper of oil press machine and then been moved forward by the rotating pressing screw for pressing. Under the high-pressure condition in the chamber, friction between material and screw, chamber will be created, which also creates friction and relative movement among material particles. On the other hand, root diameter of the pressing screw caries larger from one end to the other, hence. When rotating, it not only pushes particles to move forward,but also turns them outwards as well. Meanwhile,particles adjacent the scew will rotate along with screw‘s rotating, causing every particle inside the chamber to possess different speed. Therefore, relative movement among particle creates heat which is necessary during manufacturing becasue of helping protein change property,damage colloid,increase plasticity, decrease oil’s elasticity, resulting in high oil productivity.