The basic treatment processes of the pretreatment section are cleaning, conditioning, crushing, softening, rolling embryo, steaming and pre～pressing. Among them, cottonseed pretreatment needs to be de～fleeced, shelled and other processes. Pretreatment section is an important part of grease processing equipment, and pretreatment machinery and equipment have different configuration and process with different raw materials, different output and different requirements of oil products.For different oils in our company, the configuration and process of the pretreatment workshop are different.