Since the implementation of the Millennium Development Goals in 2000，the recent research of aid on income poverty is remarkable for the Official Development Assistance (ODA) focus only on international poverty reduction. This paper uses a new data set on 24 countries in Sub-saharan Africa to examine the effect of poverty reduction of ODA dominated by western developed countries. Firstly, we find no evidence that aid has systematically affected income poverty. Secondly, we examine the determinants of poverty reduction and find that the poverty has the effect of inertia. Thirdly, we estimate that inflation is not conductive to poverty reduction to Sub-saharan Africa. This paper argues that the aid dominated by western developed countries cannot reduce income poverty and probably because of limited scale of aid, the unfocused motivation, different purposes (improving welfare rather than income), and other negative factors.