Oil tank of hydraulic press

The invention provides an oil tank of a hydraulic press. The oil tank comprises an oil tank body, an oil returning pipe and a cooling component, wherein the oil returning pipe communicates with the oil tank body; the cooling component comprises an oil tank cooling component and an oil returning pipe cooling component; the oil tank cooling component comprises a first cooling water tank, an oil tank cooling pipeline and a water pump; the oil tank cooling pipeline is arranged in the oil tank body; the first cooling water tank communicates with the oil tank cooling pipeline through the water pump; the oil returning pipe cooling component comprises a second cooling water tank; and the oil returning pipe passes by the second cooling water tank. Compared with the prior art, the oil tank of the hydraulic press has the advantages that the oil returning pipe is cooled by adopting the oil returning pipe cooling component; the oil tank body is cooled by the oil tank cooling component; and hydraulic oil is rapidly cooled,