The present invention provides an elevator used speed regulator cable swinging preventing device which can save space and energy resource. The elevator used speed regulator cable swinging preventing device comprises a preventing body (8a and 8b) which continuously or intermittently extends and is arranged between the speed regulator (4) and the tensioning wheel (7) and shields the speed regulatorcable (5) in three directions and includes an opening part at the side of the lifting rod, and a band-shaped piece (12) which moves simultaneously to the elevator cage (3) and is used for closing theopening part of the preventing device body (8a and 8b), wherein, one end of the band-shaped piece (12) is connected with the elevator cage (3) at the upper part of the lifting rod and the other end of the band-shaped piece (12) is connected with the elevator cage (3) at the lower part of the lifting rod, the top of the hoist trunk (1) is arranged with a band-shaped returning wheel (10) and the lower part of the hoist trunk (1) is arranged with a band-shaped piece tensioning wheel (11) thereby setting the band-shaped piece (12) to annular.