To enhance releasability of a yarn from a yarn feed package, and to maintain tension of the yarn rewound onto a rewinding package in a proper value.

This bobbin rewinder for winding the yarn y rewound from the feed package Ps onto the rewinding package Pw is provided with a yarn feed package support device for supporting the yarn feed package freely rotatably, a rewinding device for rewinding the yarn from the yarn feed package onto the winding package, and a yarn feeder F for imparting feeding force toward a winding package side for the yarn y from the yarn feed package up to the winding package.