Insurance fund is a fund used to meet the special needs of unfortunate accidents and natural disasters in the national income of socialist countries, also known as social insurance fund. It is a necessary condition to prevent the interruption of social reproduction process and ensure the normal development of national economy, and it is an integral part of accumulation fund. In the physical form, it includes not only the reserves of various means of production such as equipment, raw materials and fuel, but also the reserves of major consumer goods such as grain. In addition, it also includes financial reserves in the form of value.