Poly(lactic acid) has won the polymer industria'l's high favor due to its merits of excellent biocompatibility

biodegradability

high strength

workability and plasticity in recent years.But it also has the defects of brittleness

poor heat resistance and unstable degradation rate

for this reason its application is restricted and needs to be modified.Plant fiber developed rapidly in recent years because of the benefits of its low density

low cost

high specific strength and biodegradability.As the reinforcement

it can not only improve the properties of the materials

but also endows the composite with fully-biodegradability.The plant fiber reinforcing poly (lactic acid)(PLA) composite could be named "green composite"

it represents an opportunity to partially ameliorate the environmental impacts and energy crisis.The recent researches of plant fiber reinforcing PLA composites were reviewed in this paper.Several pivotal questions were discussed in detail:improving of the interface

impact strength

heat resistance and processing method of the composites.The microfibrillited cellulose (MFC) reinforcing PLA nano-composites were also discussed.