The invention relates to the field of ladle furnaces, in particular to a direct-current electric arc electroslag heating ladle furnace. The direct-current electric arc electroslag heating ladle furnace comprises a fixing plate, a compression mechanism, a limiting mechanism, a storage mechanism, a lifting mechanism, a fixing mechanism and a supporting ring. Molten steel is put inside the storage mechanism. When other substances are to be added to the interior of the storage mechanism, the compression mechanism at the top end of the storage mechanism is extruded so that gases inside the compression mechanism enter the interior of the bottom end of the lifting mechanism and intensity of pressure inside the lifting mechanism is increased. The lifting mechanism is pushed to move upwards at thetop end of the storage mechanism. The fixing plate is pushed to slide out from the top face of the storage mechanism by movement of the lifting mechanism. The interior of the storage mechanism is opened so that substances can be conveniently added to the interior of the storage mechanism. In addition, the bottom area of the fixing plate is small, opening space of the top face of the storage mechanism is small, and a good deal of heat is prevented from emitting from the interior of the storage mechanism. Moreover, the fixing plate can rise and fall conveniently at the top end of the storage mechanism, the interior of the top end of the storage mechanism can be opened or closed rapidly, and labor amount of people is reduced.