The invention discloses a post-cast strip cover plate. The post-cast strip cover plate comprises a plate body covering the top of a post-cast strip; slide grooves are correspondingly formed in the twosides of the plate body; slide rods penetrate into the slide grooves; the slide rods extend out of the plate body and form propping parts at the bottom of the plate body; and elastic pieces used forpushing the propping parts to a structure on one side adjacent to the post-cast strip are connected between the slide rods and the plate body. The post-cast strip cover plate covers the top of the post-cast strip to realize a secondary protecting effect on the post-cast strip and effectively prevent stacking of sundries and sludge; the assembling and disassembling are convenient and reliable; thetransferring and storage are convenient; parts are convenient to change and maintain; and the post-cast strip cover plate can be suitable for use places of the post-cast strips with different widths.