The present invention discloses crop rice and a preparation method of the crop rice. The crop rice is prepared with the following raw materials in weight proportions: starch base material in 2-4 portions and main crop material in 6-8 portions; the starch material is selected from potato starch, sweet potato starch, tapioca starch, maize starch, and maranta; the crop material is selected from corn, sorghum, millet, sweet potato, buckwheat, oat, kuroyone, wild oats, mung beans, red kidney beans, and pearl barley. The preparation method is: filter, clean, and crush the grains, mix with starch material, shape by extrusion, and dry, pack, and load into warehouse. The crop rice has smooth surface and even size, without any food additive or preservative, delivers good mouth feel, can be cooked with rice, and is rich in beneficial elements, Vitamin, and lysine, etc., and contain a great deal of dietary fiber, and therefore can greatly balance internal milieu. The crop rice in the present invention is available in more than 10 variants, depending on the formula, for free choice.