The invention belongs to the technical field of ABS high rubber powder production, particularly relates to a styrene storage tank for ABS high rubber powder production. The following scheme is provided for solving the problem of nonuniform storage and cooling of styrene particles in the prior art, the styrene storage tank comprises a heat preservation shell internally provided with a cavity and having a cuboid structure on the whole, an inner barrel with a similar shape and an upward opening is arranged on the inner wall of the heat preservation shell, the space between the outer wall of the inner barrel and the heat preservation shell is filled with a heat preservation material, a vertical inner partition plate is fixed to the position, located at the quarter position, of the inner wall of the bottom of the inner barrel, the inner wall of the inner barrel is divided into a storage cavity and a control cavity through the inner partition plate, and a discharging mechanism is arranged in the middle of the bottom of the storage cavity. Through the arrangement of a driving mechanism, a cooling pipe, of a coil pipe structure, in the inner barrel can be driven to continuously move front and back, then the cooling pipe is continuously changed to make contact with styrene particles at different positions in the inner barrel for cooling, and the cooling effect and the cooling uniformity are improved.