Marine garbage collecting and compressing device

The invention relates to the technical field of marine litter recycling, and discloses a marine litter collecting and compressing device which comprises a support, first propellers are fixedly connected to the positions, close to the bottom, of the four corners of the support, and second propellers are fixedly connected to the positions, corresponding to the first propellers, of the middles of the two sides of the support. Buoyancy columns are fixedly connected to the positions, close to the first propeller and the second propeller, of the two sides in the support, a garbage storage box is arranged at the bottom in the support, a buoyancy plate is fixedly connected to the top of the garbage storage box in the support, and a garbage conveying mechanism is arranged in the middle in the support and located at the top of the buoyancy plate. And a compression mechanism is fixedly connected to the rear side of the garbage transportation mechanism in the bracket. According to the marine garbage collecting and compre