At present, many researchers have analyzed the motions effect of towing fish to the towing cable and the towing vehicle. But the power cables effect to the motion of the remotely operated vehicle has been ignored. In this paper, the effect of power cable has been researched, especially, the motion of winch has been introduced. The length of cable is decided by the motion of the remotely operated vehicle and winch concurrently. So, this paper analyzed the effect of the power cable to the motion of remote operated vehicle (ROV) in different conditions. For this system, power cable can be seen as the flexible body, which can experience the deformation and displacement, so the power cable has been modeled and analyzed by the absolute nodal coordinate formulation (ANCF) in this paper. The remote operated vehicle, which can be seen as the rigid body, is modeled with the six degrees of freedom motion equation. The winch, which can be seen as the rigid body, just has the rotational motion, so the motion of winch is modeled with a moment-of-momentum formula. After using the numerical method to simulate the motion of this system, the effect of powering cable and winch to the motion of remote operated vehicle has been showed clearly by the simulation result.