Deep-sea equipment cathodic protection device based on biological anodes

The invention discloses a deep-sea equipment cathodic protection device based on biological anodes, and relates to the field of deep-sea metal corrosion prevention. The deep-sea equipment cathodic protection device comprises deep-sea equipment, a bottom-sitting bracket and the at least one biological anode, the bottom-sitting bracket is arranged at the bottom of the deep-sea equipment, and the biological anodes are arranged at the bottom of the bottom-sitting bracket. The biological anodes comprise protection covers, a plurality of carbon brushes and electricity-production bacteria, wherein the carbon brushes and the electricity-production bacteria are placed in the protection covers, the electricity-production bacteria are attached to the carbon brushes, the carbon brushes are connected through wires, the side walls of the protection covers are side walls with gaps, the bottoms of the protection covers are closed, the tops of the protection covers are open, the bottoms of the biological anodes are connected