The invention provides a refrigerator. The refrigerator comprises storage rooms and an evaporator used for providing a cooling capacity for the storage rooms. The refrigerator further comprises a liquid storage device, a defrosting box, a liquid inlet pipeline, a heating device and a liquid returning pipeline. Defrosting liquid is contained in the liquid storage device. An inner cavity with an upward opening is defined by the defrosting box, and the evaporator is arranged in the inner cavity of the defrosting box. The liquid inlet pipeline is arranged to guide the defrosting liquid in the liquid storage device to the portion above the evaporator so as to spray the evaporator. The heating device is arranged on the liquid inlet pipeline and arranged to heat the defrosting liquid flowing through the liquid inlet pipeline. The liquid returning pipeline communicates with the inner cavity of the defrosting box and is arranged to convey the defrosting liquid in the defrosting box back to the liquid storage device. Compared with the prior art that a heating device is utilized for heating surrounding air to conduct baking type defrosting on an evaporator through hot air, the defrosting liquid and the evaporator can be subjected to sufficient heat exchange through the defrosting manner, a better heat exchange effect is achieved, accordingly, the defrosting efficiency is improved, and the energy consumption can be reduced.