The invention discloses a sliding device for a cable operation, and relates to sliding devices. The sliding device comprises a bottom plate (7), an attachment plate (8) and wire hanging devices, wherein a plurality of sliding chutes (5) are formed in the upper surface of the bottom plate at intervals; one wire hanging device is arranged between every two adjacent sliding chutes; each wire hanging device comprises two support bodies (4), a rotating plate A (1), a rotating shaft (2) and a rotating plate B (3); every two support bodies are respectively arranged in two adjacent sliding chutes; a pulley (6) is arranged at the bottom of each support body; each rotating plate A (1) and each rotating plate B (3) are respectively arranged at the upper parts of every two support bodies; each rotating shaft (2) capable of rotating is arranged between each rotating plate A (1) and each rotating plate B (3); and the attachment plate is arranged on one end surface of the bottom plate. According to the sliding device, a plurality of wire hanging devices can be put into the sliding chutes for slidingreeling and unreeling, so that friction of a power line and the ground is avoided; the service lifetime of a cable is prolonged; and the sliding device is simple to maintain and convenient to operate.