Profiling ditching device

The invention discloses a profiling ditching device. The profiling ditching device comprises a single profiling device, an integral profiling device and a ditching device; the single profiling device comprises a fixed rod, a linkage rod and double lower pull rods; the integral profiling device is fixedly connected with the fixed rod; the ditching device is fixedly connected with the linkage rod, and the linkage rod drives the ditching device to move up and down; and the double lower pull rods are arranged between the fixed rod and the linkage rod, one end parts of the double lower pull rods are hinged to the linkage rod, the other end parts of the double lower pull rods are hinged to the fixed rod, and the double lower pull rods are used for driving the linkage rod to move up and down and further driving the ditching device to move up and down, so that the ditching device adapts to the height change of different mud feet and mud surfaces. The profiling ditching device has the beneficial effects that the influ