Abstract: A novel herbicidal compound ZJ0862 was synthesized from salieylic aldehyde,3,4-dichloro-aniline and 4,6-dimethoxy-2-methyl sulfonyl pyrimidine.The chemical structure of the compound was confirmed by 1H NMR,MS,IR and elemental analysis.The bioassay indicated that ZJ0862 had good herbicidal activity to the important weeds in rice field,such as Echinochloa crus-galli and Cyperus difformis (inhibition rate ＞90%).And the inhihition rate for 15 common weeds such as Alopecurus aequalis,Avena fatua,Setaria viridis were 85%~100% at 45 g/hm2.It had broad spectrum weed control.The field trial showed that the compound (150 g/hm2) was safe to transplanted rice,and had good efficacy (81.3%~98.4%) to the mainly weeds in paddy,such as A.baccefera and L.procumbens,under the concentration of 60~90 g/hm2.Toxicological tests showed it was low toxicity,non irritating,slightly sensitisation and negative mutagenicity. ZJ0862 had good potential to dovelop in transplanted rice.