In order to analyze the application prospect of pyrazosulfuron + mefenacet 68% WP in rice field, we carried out stationing registration experiment in Hunan, Zhejiang, Hebei, Liaoning and Heilongjiang provinces.According to the experiment results, pyrazosulfuron + mefenacet 68% WP had many significant traits.It is safe and broad-spectrum, and can be able to increase productionIt can effectively prevent and control monocotyledonous or dicotyledonous weeds, such as Echinochloa crusgalli, Echinochloa oryzicola, Scirpus planiculmis, Eleocharis plantagineiformis, Monochoria vaginalis, Cyperus serotinus, etc.