Graphene /poly (lactic acid)/Stearic acid composites have been successfully fabricated. The obtained results show that stearic acid attached on GO sheets can act as a compatibilizer of GO to PLA matrices. The outcome is that tensite strength is improved, especially in PLA-GO1-SA1 and PLA-GO1-SA1-TiBuO4 where the observed tensite straght are more than 33 and 4p percent higher respectively, comparing to neat PLA. The compatibility of GO to PLA influenced by stearic acid results from the lipophilicity increment of the long hydrophobic alky chain. However, stiffness can be observed in all PLA-GO-SA sample due to the absence of necking in the PLA composites samples.