The invention relates to a mouse cable rewind apparatus having an upper cover, a protection disc, an upper winding disc, a lower winding disc, a cable, a support plate and a lower cover. The upper winding disc and the lower winding disc are attached to each other and disposed within a receiving groove of the upper cover that is connected with the lower cover. A cable head cap of the lower cover is opened to take out the cable head for rapidly extending the cable at a certain length while the cable is rapidly rewound as well by use of a spring and a regulating member. Moreover, a rewinding device is available for attenuating the winding and pulling force on the cable end that is spot-welded on a circuit board and for preventing the strands inside of the conventional mouse cable from being subject to break due to the oxidation of the cable sheathing and the frequent and rapid pull of the cable.