A poultry weight monitoring system has: a weighing pan device having a weighing pan and a weight sampling device, the weighing pan device is used to be placed in a poultry breeding position, and the weight sampling device is used to monitor the weighing pan One of the steady-state load, and when the steady-state load changes, update the previous value of the steady-state load and the current value of the steady-state load, and update the previous value and the updated The difference between the current values is stored in a memory； and an information processing device for performing a bird weight change monitoring operation on the plurality of the differences provided by the weighing pan device within a unit period.一種家禽重量監測系統，其具有：一秤盤裝置，具有一秤盤及一重量取樣裝置，該秤盤裝置係用以置於一家禽飼養位置內，該重量取樣裝置係用以監測該秤盤之一穩態負重，並在所述穩態負重產生變化時更新所述穩態負重的前一次數值和所述穩態負重的目前數值，及將更新後的所述前一次數值和更新後的所述目前數值的差值儲存在一記憶體中；以及一資訊處理裝置，用以對該秤盤裝置在一單位期間內所提供的多個所述差值進行一家禽重量變化監測作業。
