Polypropylene staple fiber is a post-processing product of polypropylene. Because there is no hydrophilic group in the molecular structure of polypropylene staple fiber, the moisture regain is low and the electrical conductivity is poor. In the production process of polypropylene staple fiber, electrostatic effects are easily generated between the polypropylene staple fiber and between the polypropylene staple fiber and the drafting roll, resulting in problems such as broken filaments, broken filaments, and difficulty in winding and the like, thus causing difficulties in production. . Industrial use of oil additives is often used to improve the electrostatic effect of polypropylene staple fiber.