PURPOSE: To enable the easy knotting of a metal line and a nylon line in a short time without using an adhesive and prevent the breakage at the knotted part.

CONSTITUTION: An end of a metal line is bent to nearly a U-form and an end of a nylon line is tied to form a loop. The U-shaped part of the metal line is superposed on the looped part of the nylon line and the other end of the nylon line is passed 4 to 5 times through the U-shaped part of the metal line and the looped part of the nylon line to wind the nylon line on the metal line and form a knitted part. The metal line and the nylon line are pulled apart to tighten the knotted part and complete the knotting of the metal line and the nylon line for fishing.