Pre-filled syringe protective cap and preparation method and device thereof

The invention discloses a pre-filled syringe protective cap and a preparation method and device thereof. The protective cap comprises a protective cap body, and an anti-sticking layer used for preventing the protective cap from being stuck to an injection end is arranged on the contact face of the protective cap body and the injection end of a syringe. The preparation method of the protective cap comprises the following steps: forming a texture layer on the surface of a splicing piece matched with the injection end of the syringe by using a texture process, wherein the splicing piece with the texture layer formed on the surface and a cavity jointly form a protective cap mold; and preparing the pre-filled syringe protective cap in the protective cap mold by using a forming process. The device used in the method comprises the protective cap mold, the protective cap mold comprises the vertically-through cavity and an insert piece inserted into the cavity and used for being matched with the injection end of the s