The invention belongs to the technical field of beneficiation plant design, and particularly relates to a filter gravity drainage arrangement method. The method comprises the following steps: (1) arranging a vacuum disc filter and a gravity drainage tank on a platform with the bottom elevation of 6 m; (2) arranging a water seal tank, an overflow water tank and a vertical slag slurry pump at a position with the bottom elevation of -3.50 m, and arranging a liquid level meter in the water seal tank; (3) allowing a filtrate to automatically flow into a gravity drainage tank from the vacuum disc filter, and discharging the lower filtrate into the water seal tank through a filtrate pipeline; and (4) overflowing the filtrate into the overflow water tank, and controlling the vertical slag slurry pump to discharge the liquid by means of the liquid level meter. A water seal box on the 0 m terrace is cancelled, and the water seal tank is arranged, so overflow of the water seal tank enters the overflow water tank, the vertical slag slurry pump is controlled to discharge the liquid through high and low liquid levels of the liquid level meter, the gravity drainage tank and the filter are mountedon the platform about 6 m, and the height of the filter installation platform can be adjusted according to the depth of s pump pool, so the height of the whole plant is reduced.