The invention discloses a forage cutting device for animal husbandry, which comprises a box body, a first partition, a motor, an incomplete gear, a first rack, a retaining plate, a cam, a mounting plate, a cutting blade, a second spring, a collecting Frame and sprinkling device, and described sprinkling device comprises second rack, piston, cylinder body and sprinkler head, and the present invention is provided with motor, cam, cutting blade and second spring, makes cutting blade constantly cut grass material by cooperation, cutting speed Fast, high working efficiency, equipped with incomplete gears, the first rack and the baffle plate, through the cooperation to automatically discharge the forage after each cutting, and continuously cut and unload the material, which reduces the labor intensity of workers and improves work efficiency. , is provided with a sprinkler device, the sprinkler device includes a second rack, a piston, a cylinder and a sprinkler head, the incomplete gear meshes with the second rack, sprays water mist on the forage, moistens the hay, and is conducive to the chewing and digestion of animals , while replenishing water.