Ditch cover plate capable of preventing foreign matters from falling

The utility model discloses a ditch cover plate capable of preventing foreign matters from falling. The ditch cover plate is characterized by comprising a matching plate and a bottom plate, the matching plate is arranged in the bottom plate through a linear fastening screw; a baffle plate arranged in the matching plate can prevent foreign matters from falling into the ditch when no water is accumulated; a filter screen is arranged in the bottom plate; filter holes are formed in the filter screen; the filtering holes enable accumulated water to pass through the filtering net and can prevent foreign matters from falling into the ditch so as to prevent the ditch from being blocked; when more foreign matters are left on the filtering net, the straight fastening screws can be screwed out of the threaded grooves and the threaded holes to separate the matching plate from the bottom plate, so that the foreign matters can be collected; the device has the effects of preventing foreign matters from falling into the ditc