A fishing tool sinking rope and modular snap fastener of using the same is disclosed by the present invention. A module stringing core is configured to string a plurality of sinking elements at equal intervals. Each of the sinking elements comprises a main body having two ends connected jointly to a neck portion and a terminal portion. The neck portion has a radial cross-sectional size less than a radial cross-sectional size of the main body and a radial cross-sectional size of the terminal portion. A covering woven rope is interlaced to cover the module stringing core. The modular snap fastener comprises a bendable line and a plurality of droplet-shaped hollow snap fastening members connected to two ends of the bendable line, and each of the hollow snap fastening members comprises a U-shaped gap snap fastening slot configured to fit the neck portion. Therefore, through the quickly connector, the sinking element and the modular snap fastener can be quickly assembled to form a string of the module stringing core serving as a center line of circular knitting machine to produce the fishing tool sinking rope, so that the automated production can be achieved.
