Mobile power supply ship and power supply system

The utility model provides a mobile power supply ship and a power supply system. The mobile power supply ship comprises a ship body, a plurality of battery boxes, a platform base and power supply equipment. And each battery box is arranged on the ship body. The platform base is arranged on the ship body, the platform base is provided with at least two layers of platforms, and each layer of platform and a deck of the ship body are respectively provided with a pile head used for connecting and fixing. The power supply equipment is arranged on the ship body or the platform base, electrically connected to the battery boxes and used for being electrically connected with an electric ship. The mobile power supply ship can travel to the water area where the electric ship is located to supply power to the electric ship, the electric ship does not need to travel to the shore, and time is saved. The mobile power supply ship is provided with at least two layers of platforms, and pile heads for connecting and fixing are a