The invention relates to substituted para-trifluoromethyl phenyl ether compounds and its preparation and use thereof especially. The substituted para-trifluoromethyl phenyl ether compounds of the invention having general formula (I):The substitutes see Description.The compounds of present invention have broad-spectrum activity, and may be used to control diseases in all sorts of plants caused by oomycete, basidiomycete, ascomycete pathogens and deuteromycete, and it may also provide good control efficacy at very low dosage because of the high activity. The compounds of the invention have good insecticidal activity and have good activity against many pests, especially for Carmine spider mite. The compounds are fit for synthetical control against many kinds of pests.
