Abstract: The continuous cropping of rice and wheat can not only ensure the normal planting of wheat, but also effectively improve the yield of rice, and effectively promote the agricultural yield and income. With the increasing grass damage in the continuous cropping of rice and wheat, the yield of rice and wheat is seriously affected. With the increase of weed species, the effect of using a single herbicide is not good. Increasing the type and quantity of herbicides can effectively kill weeds, but it will affect the yield of rice and wheat. This paper discusses the prevention and control technology of weed damage reduction and efficiency in rice wheat continuous cropping field in detail, so as to provide relevant reference for growers and relevant staff.