To provide a method for improving separation of an upper and a lower layers of a woven fabric caused in a thickening belt, breaking of an endless woven fabric by breaking of warp yarns, dropping-off of a guide protrusion, insufficient guide performances, cutting, etc., of the woven fabric caused at the boundary between a guide-attached part and the woven fabric; and to provide the improved belt.

A dewatering and thickening belt is composed of the endless woven fabric composed of a woven fabric woven from a synthetic filament, a bending-resistant element and the guide protrusion. In the belt, the woven fabric is a two-layer woven fabric obtained by binding upper surface side warps and lower surface side wefts arranged on the upper and lower sides with warp binding yarns and the bending-resistant element having 30-60 mm width is attached to the woven fabric by filling ≥85% of the woven fabric space in the woven fabric selvedge part with a urethane resin. The guide protrusion is attached to a bending-resistant part to which the bending-resistant element is attached by fusion-bonding. A method for producing the dewatering and thickening belt is provided.