The invention discloses an automatic measuring discharging device for post-calcining coke of a calcining furnace. The automatic measuring discharging device for the post-calcining coke of the calcining furnace comprises a measuring discharging stock bin, four pressure sensors, a pneumatic stop valve and a control cabinet; four pull rods of which the ends are provided with pull hooks are in hookingconnection with four pull rings which are arranged on the bottom face of a discharging machine installation platform and provided lifting rods in a one-to-one correspondence mode, and the four pull rods are arranged on the upper top faces of the pressure sensors correspondingly; pull rods of which the ends are provided with pull hooks are in hooking connection with pull rings which are arranged on the four side faces of the cuboid middle portion of the measuring discharging stock bin and provided with lifting rods in a one-to-one correspondence mode, and the pull rods are arranged on the lower bottom faces of the pressure sensors correspondingly; and a time relay is installed on a circuit which is arranged in an electric control cabinet and composed of the electric control cabinet and thepneumatic stop valve. Automatic measuring discharging of the post-calcining coke of the calcining furnace is achieved, measured data of the post-calcining coke of the calcining furnace are precise, and the production quality of carbon blocks is improved; the phenomenon that the environment surrounding a workshop field is polluted by dust generated during measuring and discharging of the post-calcining coke of the calcining furnace is prevented; and expenses are decreased, and the production cost of the carbon blocks is reduced.