Objective To improve the toughness, strength and oxygen barrier properties of poly(L-lactic acid)(PLLA). Methods Uniaxially stretched PLLA/poly(butylene succinate) (PLLA/PBS) blend film was prepared through twin-screw extrusion line. Universal tensile testing machine, differential scanning calorimetric analyzer and oxygen permeability test were used to evaluate the mechanical, thermal and oxygen barrier behavior of PLLA/PBS film with different draw ratios. Results Yield strength and Young′ s modulus of uniaxially stretched PLLA/PBS film were increased. But the elongations at break first increased and then decreased with the increase of the draw ratios. Crystallization rate of PLLA/PBS film increased with the increase of the draw ratios and its oxygen barrier properties were also improved. Conclusion By uniaxial stretching and blending with PBS, the toughness and strength of PLLA were improved, furthermore, the oxygen barrier properties of the medium stretched PLLA/PBS film were relatively good.