A fishing line winder is disclosed. The line winder is combined with a line reel, so that a fishing line is sequentially reeled and unreeled. The line winder is a machine for preventing reverse winding and tangling, where a base of the fishing line winder is provided with a shaft, and a driving member drives the shaft to rotate, while a spindle is provided with a line spool, an abutment wheel and an unidirectional bearing； a resistance against the rotation of the abutment wheel is formed by means of a brake pad, thus preventing reverse winding and tangling when the fishing line is reeled onto and unreeled from the line reel.
