This Southern African Development Community (SADC), as a regional economic integration organization in Africa, has 16 member countries with rich natural resources and tourism resources, attracting the attention of global investors. Although the region's transport infrastructure is among the leading in Africa, it still lags far behind global standards. This study provides a comprehensive assessment of the current state of transport infrastructure in SADC, with a particular focus on road transport facilities within the region. Based on SADC's official "SADC Regional Infrastructure Development Master Plan Transport Sector Plan, 2012", this paper evaluates the current situation of its road transport infrastructure and conducts an in-depth analysis of the future road development plan in the plan. This research aims to reveal the challenges faced by SADC at the infrastructure level, and provide a comprehensive and in-depth perspective for policy makers, investors and other relevant stakeholders. At the same time, this study can provide some new ideas for future research and provide new solutions to the problems of transportation infrastructure in the SADC region.