The invention relates to a cyanoacrylate compound (I) containing a pyrazol structure as well as a preparation method and application of the cyanoacrylate compound. The cyanoacrylate compound is obtained by taking a pyrazol biphenyl methylamine compound and 2-cyano-3,3-substituted dimethylthioacrylate to react. The cyanoacrylate compound containing the pyrazol structure, provided by the invention, has a relatively good prevention and control effect on broadleaf weeds and grassy weeds; the compound can be used for preparing herbicides used in the fields including agriculture, gardening and the like.