To provide a method for holding a torpedo car hot aiming at solving a problem in a conventional method for holding the torpedo car hot by which positive hot-holding due to heat generation by charging a carbon source and a heat radiation prevention effect by utilizing a heat-holding cover are combined to effectively hold a torpedo car during non-charging hot, and the lowering of the temperature of molten pig iron when the molten pig iron is received at the next time is therefore extremely reduced.

After charging a flexible container bag filled with the carbon source into the torpedo car discharging the molten pig iron and desirably having been cleaned through a molten pig iron receiving hole of the torpedo car, the heat-holding cover is fitted to the molten pig iron receiving hole of the torpedo car. In such a case, the charge of the carbon source is performed by charging the flexible container bag filled with an iron source together with the carbon source, and the charge of the flexible container bag and the fitting of the heat-holding cover, are performed with the same magnet lifting-up device.