To improve the working efficiency of a work in which a tray cup is automatically fed on a weighing measure without touching the tray cup by hand, the raw material is filled in the tray cup and measured, and transferred out of the weighing system with a simple means.

An automatic feeding/discharging device of a tray cup having a weighing measure is provided with an automatic tray cup feeding machine in which tray cups 2 loaded on a stocker 6 in a vertically stacked manner is taken out one by one, a weighing measure 3 to receive the taken-out tray cup 2 and weigh the raw material filled therein, and discharging machines 40-45 to discharge the tray cup 2 out of the weighing system when the raw material is filled to the initial quantity.