Underwater plastic bag garbage collecting device

The invention discloses an underwater plastic bag garbage collecting device, and belongs to the field of water garbage removal. The underwater plastic bag garbage collecting device is composed of a barrel, a first battery set, a first controller, a motor installing plate, a drive motor, an impeller, a rotation speed monitor, a transmission rod, a speed reducer, a lower supporting rod, an upper supporting rod, stab sticks, stab stick connectors, a motor cover, an adsorption connecting rod, adsorption blocks, a battery set cover, a controller cover and a filter net. The barrel is of a cylindrical structure. The filter net is arranged at the upper end opening position of the barrel. The motor installing plate is arranged and fixed in the barrel. An output shaft of the drive motor penetrates the motor installing plate. The drive motor is vertically installed and fixed to the motor installing plate, and the impeller is arranged on the output shaft of the drive motor. The device can finish collecting work of underw