Jute fiber is a lignocellulose material that could be utilized for reinforcement of composites due to its high tensile strength,light weight,low cost and abundant.To improve the compatibility of hydrophilic jute fiber with hy drop hobic resin,hydrophobization of the fiber surface is often needed.In this study,the feasibility of laccase-mediated grafting dodecyl gallate (DG) on the jute fiber was investigated,in order to enhance the surface hydrophobicity of jute and its compatibility with synthetic resins.The grafting products were characterized by FT-IR,XPS,SEM and AFM.The quantification of the grafting was estimated in terms of the grafting rate and the DG content by saponification.The hydrophobicity of the jute fabrics was determined by means of the contact angle and the wetting time.The mechanical properties and the fracture section of the jute fabric/PP composites were studied.The results supported the covalently coupling of DG to the jute substrates mediated by laccase.The grafting rate was 4.16% and the DG content of the modified jute reached 3.19%.The jute fabric modified with laccase and DG showed increased contact angle from 96.67° t0 111.49° and wetting time from 45.7s to at least 30 min,revealing that the surface hydrophobicity of the jute fabric was rncreased after the enzymatic graft modific ation with hydrophobic DG.The breaking strength of the modified jute fiber/PP composite was also increased and the fracture section became neat and regular,as the result of laccase-assisted grafting with DG.