Underwater diving buoyancy equipment

The invention discloses buoyancy underwater diving equipment. The buoyancy underwater diving equipment comprises a buoyancy device and a propelling device, and the buoyancy device is a buoyancy powersupply vest and comprises a buoyancy vest body, an air inflation and deflation assembly, a power supply assembly and a control system; the propelling device comprises a shaftless motor, an installation base plate and a fastening belt, the shaftless motor is arranged in the installation base plate, the installation base plate is fixed to a body of a diver through the fastening belt, and a power supply is electrically connected with the shaftless motor; the power supply is fixed to the body of the diver through a fastening device; and the propelling device is connected with the power supply assembly of the buoyancy device through a waterproof wire. The buoyancy vest can be worn on the human body and has air inflation and deflation functions, and the depth of diving is controlled by controlling the magnitude of vest