The invention belongs to the field of power grid cable take-up devices and particularly relates to a rewinding preventing take-up device for a power grid. On the basis of an existing take-up device, by arranging a stress pay-off structure and a homing rewinding preventing mechanism, a pay-off device can pay off cables automatically and freely to release instant pull when being affected by strong pull suddenly, the take-up device is prevented from being pulled so that safety of a user can be ensured, meanwhile, by means of spring resetting and a ratchet wheel braking structure, after the pull disappear, the structure of rolling wheels and the like can be reset to the original position, meanwhile, a ratchet wheel mechanism is utilized for stopping inertia rotation of the rolling wheels, thecables are prevented from being wound repeatedly, the user can continue to work normally after the pull disappears, unnecessary operation is avoided, and then the working efficiency is improved. By arranging connecting rod connecting holes and a detachable fixing plate, the take-up device can replace the rolling wheels easily and conveniently, repeated utilization can be achieved through the samesupport, equipment needs are reduced, the cost is reduced, and the working efficiency is improved.