The invention discloses a dual-sucking energy-saving beam-pumping unit. The dual-sucking energy-saving beam-pumping unit comprises sucker rods, driving horseheads, loading horseheads, a beam, a beam frame, driving wires and driving systems. The two ends of the beam is symmetric and all comprise one driving horseheads and one loading horseheads, the driving horseheads are connected with the corresponding driving systems through the driving wires, the loading horseheads are connected with the corresponding sucker rods, the structures of the driving systems on the two sides are the same, and thedriving systems all comprise driving units, traction units and counter weight units.When the left side driving unit moves downward, the left side traction unit draws the left side driving horsehead tomove downward, the left side loading horsehead and the left side sucker rod move downward, the right side loading horsehead draws the right sidesucker rod to move upward under the action of driving force of the left side driving system, and meanwhile, the right side driving unit moves upward initiatively, and the moving speed is higher than the downward moving speed of the left side driving unit,a right side counter weight fails to work, and back and forth. The dual-sucking energy-saving beam-pumping unit is driven by a gear and a gear rack, the counter weight can be adjusted correspondinglyaccording to actual working conditions of two wells, the balancing property is good, and the energy-saving effect is significant.