[Object] In a fishing line for capturing large fishes made by a polyvinylidenefluoride resin filament, a polyvinylidenefluoride resin filament wherein even by enhancing the tensile strength at break by enlarging the filament diameter than that of usual fishing line, an appropriate tensile elongation at break can be obtained, so that the rapid and enormous impact generated when large fishes have taken the bait can be reduced, and that has a homogenous fiber structure which generates almost no inner cavity when forming a filament with a large diameter, is developed.