The invention relates to a mixing tank, in particular to a mixing tank for placing petroleum asphalt. The technical problem to be solved by the present invention is to provide a petroleum asphalt storage mixing tank which is not easy to agglomerate, not easy to stick to the wall, and easy to discharge during the asphalt storage process. In order to solve the above-mentioned technical problems, the present invention provides such a petroleum asphalt mixing box, including a frame, etc.; There is a switch mechanism on the left side of the bottom, a stirring mechanism is arranged in the storage box, and a funnel is connected to the left side of the bottom of the frame. The present invention designs a mixing box for placing petroleum asphalt, which can prevent the asphalt from coagulating and sticking to the wall by setting a stirring mechanism. Efficiency, at the same time, it is equipped with guide rails, guide sleeves, push rods, etc., which can prevent asphalt from adhering to the inner wall of the funnel and reduce waste.