The utility model discloses an automatic control device for ash removing procedure in gelatin production process, which comprises a ash removing pool 14, wherein the ash removing pool 14 is provided with a mechanical stirring device 10, a liquid level sensor 7, a PH sensor 8 and a turbidity sensor 9 inside in corresponding position; a neutralisation reusable pool 1 communicates with the ash removing pool 14 through a neutralisation reusable waterproof pump 2 and a neutralisation reusable water intake valve 3; a ash removing reusable water pool 4 communicates with the ash removing pool 14 through a ash removing reusable waterproof pump 5 and a ash removing reusable water intake valve 6; a wastewater disposal basin communicates with the ash removing pool 14 through a wastewater discharging valve 11; the ash removing reusable water pool 4 communicates with the ash removing pool 14 through a ash removing reusable draining valve 6; the automatic control system of ash removing procedure also comprises a PLC control unit. The utility model can guarantee extracted ossein quality good and improve production efficiency.