The present application relates to a cable laying device (100). The cable laying device is used for laying a cable, and comprises: a cable laying part (10) comprising a base section (11) and an extension section (12); a turnover mechanism (20) and a positioning adjustment mechanism (30), wherein, the base section (11) and the extension section (12) are connected rotatably relative to each other at their longitudinal ends; the positioning adjustment mechanism (30) is connected to the base section and comprises a rotating assembly (31), wherein the rotating assembly (31) drives the cable laying part to rotate; and the turnover mechanism (20) connects the extension section (12) and the base section (11), and drives the extension section (12) to turn over relative to the base section (11).