The invention relates to a bounce-proof ditching device for wide and equal-height seeding, and belongs to the technical field of agricultural machinery. The ditching device comprises a tail wing, a bump, a scraper, a seeding box, a seed tube, a front cutting edge, a seed scattering plate, a seedbed, and the like. The ditching device is characterized in that: the device can be used for situations of no-tillage and wide seeding work; the tail wing, the bump, the scraper, the seeding box and the seed tube are welded to form an integral body; a seedbed leveling device composed by the tail wing, the bump and the scraper is arranged below the seeding box; the front part of the device is inlaid with the sliding knife type front cutting edge, so that the forward resistance is reduced, and grass entanglement is prevented; the seed scattering plate is arranged inside, so that seeds are scattered along the wide seedbed; the bump is arranged on the lower side, and scratches flanges are formed on the seedbed, so that seed bounce is reduced, and fixed-point and uniform seeding of seeds is facilitated. According to the device, equal-height and accurate seeding is achieved, the seeding quality is guaranteed, and the foundation for improving crop yield is laid.