The present invention relates to halogen-substituted phenoxyphenylamidines of the general formula (I), to a process for their preparation, to the use of the amidines according to the invention for controlling unwanted microorganisms and also to an agrochemical formulation for this purpose, comprising the halogen-substituted phenoxyphenylamidines according to the invention. Furthermore, the invention relates to a method for controlling unwanted microorganisms by applying the compounds according to the invention to the microorganisms and/or their habitat.