The invention relates to the technical field of oil storage equipment, in particular to a thermal insulation tank for bulk peanut oil. The thermal insulation tank comprises a tank body (1), a thermal insulation material (2), an oil inlet (4), an oil gas outlet (5) and a heating tube (3). The thermal insulation tank is characterized in that the outer wall of the oil storage tank is made of stainless steel sheet iron, the inner wall of the oil storage tank is made of rock wool, and the U-shaped heating tube is arranged at the bottom of the tank body. The oil tank is simple and reasonable in structure and reliable in connection, can achieve the effect of inflaming retarding and the effect of thermal insulating by the adoption of the rock wool thermal insulation material, can maintain even heating of the oil body in the way that the bottom U-shaped heating device is used for temperature control and the tank can make contact with the oil body in a wide area mode, and can avoid oil quality decline caused by partial heating. The oil storage tank is low in heat dissipation speed, capable of saving temperature control cost and reducing resource waste, and wide in application prospect.