To provide a winding device and a winding method that can control the delivery quantity of wire material from a wire material source always correctly to an appropriate value.

Wire material from a spool 1 rotatory-driven by a wire material delivery motor 3 is led to a coil bobbin 7 at the tip of a spindle 6 from a pulley 12 at the tension arm 10 via a pulley 13 fixed to a rotary shaft of an encoder 14, and the rotating speed of the wire material delivery motor 3 is controlled according to the supply quantity of the wire material 2 to the coil bobbin 7 detected by the encoder 14. The tension fluctuation of the wire material 2 is detected as the rotation of the tension arm 10 by a potentiometer 11, and the correction of a tension fluctuation portion is supplied to the rotating speed of the wire material delivery motor 3.