The utility model belongs to the technical field of stock bins, and particularly discloses an automatic weighing stock bin which comprises a stock bin body, a cylindrical cavity is formed in the upper portion of the stock bin body, and a
conical cavity is formed in the lower portion of the stock bin body. An annular connecting plate is arranged at the joint of the cylindrical cavity and the
conical cavity, a support is arranged at the bottom of the annular connecting plate, a support is arranged at the bottom of the support, and the support is movably connected with the support. A weighing
assembly is arranged in the support, a
pressure sensor is arranged on the side wall of the support, the weighing
assembly is used for supporting the support, and the weighing
assembly extrudes the
pressure sensor under the gravity action of the support; the
pressure sensor is connected with an external controller, and the controller is used for obtaining parameters of the pressure sensor. According to the utility model, the pressure sensor is arranged on the side wall of the support, the support is movably connected with the bracket, and the weighing assembly extrudes the pressure sensor to obtain the weight of the stock bin, so that the vertical pressure of the bracket on the hydraulic sensor is reduced, and the service life of the pressure sensor is prolonged.