The elastic scattering di®erential cross sections of deuteron + 6,7,9,11Li systems are reanalyzed by using three di®erent calculation methods and four di®erent density distributions of deuteron nucleus. As the calculation methods, we use the phenomenological optical model and microscopic optical model with CDM3Y6 interaction with and without the inclusion of the rearrangement term (RT). For density distributions, we evaluate four various density distributions of the deuteron nucleus. A good agreement between theoretical results and experimental data is achieved. The performed analysis emphasize the weak binding nature of 11Li isotope.