A ferulic acid phenethyl alcohol amine derivative is a compound having the general formula (I) in the original text, wherein R and R1 refer to 1-12 carbon alkyl, carbon alkenyl, carbon alkynyl or substituted benzyl; and R2 refers to 1-6 carbon alkyl, carbon alkoxy, carbon alkane amide, carbon alkyl sulphanyl, substituted benzyloxy group, halogen, hydroxyl, cyan, nitryl or carboxyl. When X-X is a carbon-to-carbon double bond, the configuration of the double bond is of a trans-form, a cis-form or a cis-trans mixed form; and when X-X is a carbon-to-carbon single bond, the compound is the ferulic acid phenethyl alcohol amine derivative. The ferulic acid phenethyl alcohol amine derivative has the advantages that the compound plays a fine inhibitory role in plant viruses and insects for transmitting the viruses, serves as insecticide to be capable of preventing and treating injurious insects such as homoptera, acarina and the like, serves as anti-plant viral agent to be capable of effectively inhibiting tobacco mosaic viruses, pepper viruses, tomato viruses, sweet potato viruses and the like, and is capable of effectively preventing and treating viral diseases of various crops such as tobacco, grains, vegetables, beans and the like.