The invention relates to a
drainage ditch, and relates to the field of drainage devices, the
drainage ditch comprises a cover plate and a groove body, the cover plate is provided with filtering holes, the groove body is slidably connected with a
lantern ring, the cover plate is provided with a connecting block, the connecting block is provided with a clamping block, the
lantern ring is provided with a notch and a receding groove, the cover plate is slidably connected with an inserting block, and the cover plate is further provided with a first elastic piece. And a slot is formed in the
lantern ring. When the cover plate needs to be installed, the cover plate is placed on the groove body, the lantern ring is moved to be close to the cover plate, then the lantern ring is rotated, the clamping block and the notch are staggered, the inserting block and the inserting groove are aligned, at the moment, the inserting block is clamped into the inserting groove under the action of the first elastic piece, positioning of the lantern ring can be achieved, and the lantern ring abuts against the groove body and the connecting block through the lantern ring. Installation of the cover plate on the groove body is achieved, installation tools such as screwdrivers are not needed, the trouble caused by forgetting of the installation tools is reduced, and the installation efficiency of the
drainage ditch is improved.