The invention discloses a variable-volume deep-sea butterfly-shaped net cage and a regulation and control method thereof. A central column sequentially penetrates through the middles of an upper butterfly-shaped net cage and a lower butterfly-shaped net cage, the upper butterfly-shaped net cage and the lower butterfly-shaped net cage are symmetrically arranged, the opposite ends of the upper butterfly-shaped net cage and the lower butterfly-shaped net cage are connected to the end parts of the central column through an upper
flange plate and a lower
flange plate respectively, the opposite ends of the upper butterfly-shaped net cage and the lower butterfly-shaped net cage are rotationally connected to the middle of the central column correspondingly, the periphery is connected through multiple pins, the upper
flange plate and the lower flange plate are correspondingly connected to a
signal collector, an
underwater power generation traction platform is connected to the lower flange plate, a
control system is installed on the
underwater power generation traction platform and is in
signal connection with the
underwater power generation traction platform, and the upper butterfly-shaped net cage, the lower butterfly-shaped net cage and the
signal collector are correspondingly in signal connection with the underwater power generation traction platform and the
control system. According to the variable-volume deep-sea butterfly-shaped net cage and the regulation and control method thereof, damage caused by collision among rod pieces due to
impact force of
wave motion can be effectively avoided, a large amount of labor force can be saved, safety accidents caused by underwater work of workers in a severe environment are avoided, and response can be made in time in the sudden change environment, and damage to the net cages is avoided.