The invention relates to an organic acid herbicides combination, which belongs to pesticides technology field. The invention is characterized in that active component contained in the invention is 5 percent to 25 percent of the total weight. The active component is single compound which accords with general formula I or a composition of a plurality of compound, and the general formula is RCOOH, and wherein R is straight-chain or branching chain alkyl of 1-5 carbon atom, or hydroxyl group replaced straight-chain or branching chain alkyl of 1-5 carbon atom, or benzene ring, or 1-2 hydroxyl or methoxy replaced benzene ring. The organic acid herbicides combination has low production cost, good weed control effect and good environmental compatibility, and is safe to people. The invention has low residue, and makes no difference to later sensitive crop. The weed can not develop resistance easily.