The utility model provides a novel line is walked to horizontal safety device, including horizontal bracing piece, horizontal bracing piece one end sets up the fixation clamp, on the horizontal bracing piece, along major axis direction, a plurality of gag lever posts of equidistant vertical welding, the gag lever post sets up the trough between two liang, first gag lever post that is close to the fixation clamp is originated gag lever post, and final gag lever post is terminal gag lever post, terminal gag lever post one side middle part sets up the draw -in groove, and originated gag lever post homonymy middle part is articulated with the one end of card line pole, and the other end card of card line pole is gone into in the draw -in groove of terminal gag lever post. The utility model discloses can make the device that has different quantity gag lever posts according to specific work -yard and construction demand, satisfy the demand of different scale cabins trend, the utility model discloses the back is erected to the device, can guarantee that the staff is normal current in its below, and the flexible operation is simple and convenient, does not account for the space, is convenient for store.