Taking steel as the key link and grain as the key link means taking steel manufacturing as the key link and grain output as the key link. It was a national social production movement during the Great Leap Forward from 1958 to 1960.

The Great Leap Forward Movement refers to a mass movement from 1958 to 1960, characterized by the realization of high industrial and agricultural production in economic construction. This movement is a serious setback in the process of exploring the road to building socialism.