The utility model discloses a cable duct for mining scraper conveyor, include: leader cable groove and vice cable duct, leader cable groove include that main fixed plate, one side average level of vertical setting fix bottom plate and roof and vertical setting on main fixed plate at the master shield of bottom plate opposite side, and vice cable duct includes can be dismantled the L type baffle of connection and can dismantle the vice fixed plate of connection at main fixed plate top with the roof. When need to set up mining scrape the trigger on electrical equipment on the coal -winning machine when keeping in repair, only need lay down and fix the vice fixed plate on main fixed plate and dismantle and fix the L type apron on the roof, can reduce the whole height of cable duct, so be convenient for examine and repair the electrical equipment on the coal -winning machine, integral cable duct for traditional need not to lift off whole cable duct, so easy dismounting, maintenance efficiency is higher.