A fuel-filtering device is disposed inside a fuel tank for filtering a
fuel. The fuel-filtering device includes a filter body having a bag shape
and a communication hole, and is formed of a plurality of laminated
filter layers. The laminated filter layers includes an outside filter
layer formed of a woven mesh, an inside filter layer formed of a
non-woven fabric, and at least one intermediate filter layer disposed
between the outside filter layer and the inside filter layer and formed
of a non-woven fabric. The filter body is formed of at least one of a
polyethylene fiber and a polypropylene fiber and has mesh sizes
decreasing from the outside filter layer toward the inside filter layer.