Namibia abounds in ore resources with mining as its pillar economy. The government encourages investment in mining. The ore resources are directly formed by volcanism and metamorphism. This paper reviews the exploration and development of diamond, U, Cu, Pb, Zn, Au, Oil gas, Fe, analyzes its politics, laws, infrastructure, economic environment, competitive environment and social environment. Namibia is stable in governance, complete in mining laws, good in infrastructure, stable in economy, and good social environment, but big in mining competition, indicating a good mining investment environment and favorable for investors.