Mikania micrantha herbicide

The invention provides a mikania micrantha herbicide which comprises the following components according to mass ratio: 2,4-D sodium salt to sulfometuron-methyl is (0.8 to 1) : (1 to 0.8). When in use, the mikania micrantha herbicide is added with water to be diluted to 10,000 to 100,000 times, and the spraying to mikania micrantha is conducted. Through the cooperative and synergistic action of 2,4-D sodium salt and sulfometuron-methyl, the mikania micrantha herbicide can prevent and kill off mikania micrantha and has a remarkable effect of preventing and killing off mikania micrantha and strong lasting effect, the mikania micrantha herbicide has the advantages of simple composition, convenience for use, small amount per unit area, low environment pressure, low control cost, easy popularization, huge potential value and the like. The coverage of mikania micrantha can be reduced remarkably, the creeping stem of mikania micrantha can be killed off, even mikania micrantha seeds can be killed off, and the large-area diffusion and spread of mikania micrantha can be inhibited.