Hydraulic energy-saving control system for a forklift truck, said control system comprising a steering device and a service valve for forklift trucks, wherein the steering device and the service valve each have a load feedback signal output port, wherein the system also comprises: at least one first variable displacement pump, configured as a load-sensing variable displacement pump, which serves to supply the steering device and/or the service valve with oil, wherein the first variable displacement pump has a load feedback signal reception port, wherein the load feedback signal reception port is connected to the load feedback signal output port of the steering device and to the load feedback signal output port of the service valve, wherein the oil output opening of the first variable displacement pump is connected to the oil input opening of the steering device and to the oil input opening of the service valve; characterized in that the system also comprises: at least one second variable displacement pump, configured as a variable displacement pump with an electrically variable delivery volume, which serves to execute the supply of the service valve with oil together with the first variable displacement pump only in the event of a high flow rate demand of the service valve, wherein the oil output opening of the second variable displacement pump is connected to the oil input opening of the service valve; a control unit, which is connected to the second variable displacement pump and serves to control whether or not the second variable displacement pump outputs oil. at least one first variable displacement pump, configured as a load-sensing variable displacement pump, which serves to supply the steering device and/or the service valve with oil, wherein the first variable displacement pump has a load feedback signal reception port, wherein the load feedback signal reception port is connected to the load feedback signal output port of the steering device and to the load feedback signal output port of the service valve, wherein the oil output opening of the first variable displacement pump is connected to the oil input opening of the steering device and to the oil input opening of the service valve; characterized in that the system also comprises: at least one second variable displacement pump, configured as a variable displacement pump with an electrically variable delivery volume, which serves to execute the supply of the service valve with oil together with the first variable displacement pump only in the event of a high flow rate demand of the service valve, wherein the oil output opening of the second variable displacement pump is connected to the oil input opening of the service valve; a control unit, which is connected to the second variable displacement pump and serves to control whether or not the second variable displacement pump outputs oil. at least one second variable displacement pump, configured as a variable displacement pump with an electrically variable delivery volume, which serves to execute the supply of the service valve with oil together with the first variable displacement pump only in the event of a high flow rate demand of the service valve, wherein the oil output opening of the second variable displacement pump is connected to the oil input opening of the service valve; a control unit, which is connected to the second variable displacement pump and serves to control whether or not the second variable displacement pump outputs oil.