The main purpose of the microstructural/morphology study of PLLA (poly L-lactide) tube is to evaluate the changes in morphology at various stages of manufacturing polymer scaffold which influences mechanical properties of the PLLA material. This study is applicable in improving the polymer scaffold's fracture toughness. In this study, we investigated deformation mediated superstructures and cavitation of poly (L-lactide) (PLLA) as well as their dependence on stretching temperature by wide angle x-ray scattering (WAXS) and crystallization analysis coupled with mechanical testing. It is found that the crystalline deformation are strongly influenced by stretching stress during deformation, which significantly depends on the stretching temperature. Crystalline shear accompanied by crystalline deformation at higher stretching temperatures promotes the formation of cavities oriented along the stretching axis. Based on the findings, it is possible to modify the mechanical properties of polymer materials by regulating their superstructure during deformation.