In order to understand the dynamic background,the mantle source region characteristic and magma evolution of the diabase in Henan Songshan region and the mineral composition in the area,we have done a systematic study about the mineralogical characteristics and geochemical characteristics of the diabase.Mineralogy research of the diabase in the studied area shows that the diabase have complex mineral compositions,the main rock forming minerals are plagioclase and augite,other minerals in the rocks In order to understand the dynamic background, the mantle source region characteristic and magma evolution of the diabase in Henan Songshan region and the mineral composition in the area, we have done a systematic study about the mineralogical characteristics and geochemical characteristics of the diabase. Mineralogy research of the diabase in the studied area shows that the diabase have complex mineral compositions, the main rock forming minerals are plagioclase and augite, other minerals in the rocks