Abstract-Biocomposite were prepared by combining polylactic acid (PLA)with treated or untreated empty fruit bunch (EFB) fiber by melt compounding method to observe the effects of fiber surface treatments on the mechanical properties of the biocomposite. Surface treatment of the fiber was conducted using alkali followed by silane treatment. It was found that treated fibers showed superior mechanical properties of the reinforced biocomposite as compared with untreated fiber reinforced biocomposites due to the enhanced adhesion between the EFB fiber and the PLA matrix.