The present invention discloses an automatically retractable automobile towing device, which comprises a hollow housing (1), two coil springs (2), a winding shaft (3) and a towing belt (4). The housing (1) has a mounting chamber (10) and two first through holes (13). The winding shaft (3) is rotatably assembled in the mounting chamber (10) and can maintain the towing belt (4). The towing belt (4) is able to extend and retract with rotation of the winding shaft (3). The present invention further discloses a limiting mechanism. In the present invention, the stability of automobile towing is improved, the deviation of the towing belt during the retraction process is avoided so that the towing belt is allowed to stretch or retract smoothly.