It is compounded with polyethers, surfactants, antistatic agents and special additives. The oil has good smoothness and high oil film strength, which can effectively reduce the generation of loose fibers during processing. It has excellent antistatic performance and bundling performance, good hydrophilicity, easy water washing, and is conducive to subsequent dyeing processing. During the DTY processing, the cleaning cycle of the hot box can be extended to more than 45 days.