The invention provides a new-energy waste bin, and relates to the field of environmental protection cleaning. The waste bin based on a waste bag convenient to replace comprises a body shell, a base isfixedly installed on one side of the bottom end of the body shell, a waste throwing opening is formed in one side of the outer surface of the body shell, a sound amplification loudspeaker is arrangedon the side, close to the waste throwing opening, of the outer surface of the body shell, an overhauling door is rotatably connected to the side, close to sound amplification loudspeaker, of the outer surface of the body shell, multiple sets of solar panels are arranged on one side of the top end of the body shell, a handle is fixedly installed on one side of the outer surface of each solar panel, a guide rail is fixedly installed on one side of the inner wall of the body shell, a lead screw is rotatably installed on one side inside the guide rail, a lifting plate is arranged on one side of the outer surface of the lead screw, and a waste bin body is arranged on one side of the top end of the lifting plate. A motor and the lead screw are matched, so that an operator replaces the waste bageasier and more conveniently.