The invention discloses a novel ferulic acid aromatic derivative and a preparation method and application thereof. The structural formula of the novel ferulic acid aromatic derivative is shown as a formula (I) which is described in the specification. In the formula (I), R is described in the specification. The novel ferulic acid aromatic derivative of the invention has potential medicinal activity; and the preparation raw material, namely ferulic acid, of the derivative can be obtained by using a natural extraction method, which has positive effect on resource utilization of Spartina alterniflora Loisel.