The utility model discloses a cable bridge. The cable bridge comprises a spraying device and a bridge shell (1) used for bearing cables (2), wherein a plurality of through holes (11) are formed in the bridge shell (1) at intervals in the length direction of the bridge shell, and the spraying device is used for spraying cleaning media or extinguishment media toward the bridge shell (1) so that cleaning or extinguishment can be conducted on the cables (2) inside the bridge shell (1) through the through holes (11). According to the cable bridge, when accumulated dust on the cables inside the bridge shell (1) needs to be swept or fire accidents need to be put out, the spraying device can be used for spraying the cleaning media to the bridge shell, the cleaning media enter the cable bridge through the through holes in the bridge shell and flow to the cables to clean the accumulated dust on the cables or to put out the fire accidents, and the cleaning media can be discharged through the through holes along with the accumulated dust after being used. Therefore, the cable bridge has a high security coefficient.