The utility model discloses a steel -concrete structure adopts storage platform for offshore oil development productivity, including the upper steel construction deck the below on upper steel construction deck is equipped with the middle part steel construction technology cabin rather than the rigid coupling the below in middle part steel construction technology cabin is equipped with the lower part reinforced concrete caisson rather than the rigid coupling the below of lower part reinforced concrete caisson is equipped with the bottom steel construction skirt foot rather than the rigid coupling ballast tank and former oil hold have been arranged in the reinforced concrete caisson of lower part. The utility model discloses an adoption sets up the structure in steel construction technology cabin at the middle part, compare effective platform weight and draft of having reduced with the concrete structure platform, through increase steel construction skirt foot in the bottom, has increased antiscour, anti -sliding and the antidumping ability of platform, has increased platform buoyancy in aqueous, has reduced the foundation treatment degree of difficulty and marine engineering volume, has reduced the requirement to building place and channel depth, has reduced investment cost and later maintenance cost simultaneously.