The invention provides a switch jump board slide bar assembly comprising a slide bar and a spring. The slide bar has a top pressed against a switch jump board; the slide bar is a plastic bar member. The switch jump board slide bar assembly is characterized in that the bottom of the slide bar is provided with a thin bar which is inserted in the inner hole of the spring and connected to the spring; the external diameter of the thin bar is greater than the diameter of the inner hole of the spring; the top of the slide bar is soaked with grease, and a solid lubricating material layer is arranged for covering and protecting the grease or the top of the slide bar is directly provided with a solid lubricating material layer; the solid lubricating material layer is made of wax material, soap material or solid grease material. The parts of a switch jump board slide bar requiring field assembly and mounting and grease soaking are integrated in one connecting assembly, so that the installation is convenient. The assembly efficiency is greatly improved and the switch assembly quality is guaranteed.