EI type silicon steel sheet includes E-shaped and I-shaped silicon steel sheet bodies. The E-shaped and I-shaped silicon steel sheet bodies are provided with several evenly spaced grooves and convex grooves, which are coated with wear-resistant coating. The grooves and convex grooves between each two layers can be clamped with each other. The design mechanism is ingenious and has the advantages of shockproof and wear resistance. The arc-shaped convex design helps to reduce friction, reduce the loss in the process of use, so as to extend the service life.