The invention relates to a rice field weedicide. The innovation point of the rice field weedicide is characterized in that the rice field weedicide is prepared from the following materials in parts by weight: 10-15 parts of nitrophenol, 10-15 parts of bentazone, 5-8 parts of carbamic acid, 5-10 parts of propisochlor, 6-10 parts of triasulfuron, 5-10 parts of acetochlor, 5-8 parts of pendimethalin and 10-15 parts of potassium nitrate. The rice field weedicide is low in toxicity and excellent in weeding effects, is capable of supplying fertilizer nutrients to the soil, achieving the purpose of weeding, improving the soil fertility, simultaneously reducing the degree of pollution to the soil and reducing great damage to the crops.