The invention discloses a high-speed paint mixing tank. The high-speed paint mixing tank comprises an air pump, an air purifier, an air pipe, an aeration pipe, a flow meter, a material inflow pipe, atank body, an upper level gauge, an aeration hole, a lower level gauge, a stirring rod, a blade, and a temperature measuring instrument; Based on design of the traditional paint mixing tank, a pneumatic stirring device including the air pump, the air purifier, the air pipe, the aeration pipe, the flow meter and the aeration hole is added, blowing is carried out on inside of the paint while stirring, the flow speed of the liquid is increased, in addition, the increase of the liquid level gauge and the temperature measuring instrument can control the capacity and temperature of the liquid insidethe tank body, and the controllable precision is higher. The high-speed paint mixing tank has the advantages of simple structure, small volume and large power, and has strong practicability.