Biodegradable composites of wood fiber/PLA were fabricated by using stearic acid and titanate’s regulation on the interface of wood fiber/PLA with injection molding processing. The effects of the dosage of regulation agent on the mechanical and biodegradable properties were discussed. The results reveal that the tensile strength and impact strength were fabricated greatly after the process of regulation agent on wood fiber, however, the effect of titanate is much better than that of stearic acid as regulation agent. Both of them c...