The invention relates to a charge pump system, a method for generating reading and writing operation word line voltage by the aid of the same and a memory. The charge pump system comprises a standby mode charge pump, a work mode charge pump, a controlled switch, a load capacitor, a first voltage division circuit, a second voltage division circuit, a first comparator, a second comparator, an OR gate circuit and an oscillator, the standby mode charge pump is controlled by standby enable signals, the work mode charge pump and the controlled switch are controlled by work enable signals, output ends of the two charge pumps are connected, the load capacitor is respectively connected with the output ends of the two charge pumps and the ground, an output end of the standby mode charge pump is connected with the first voltage division circuit, two ends of the controlled switch are respectively connected with the output end of the work mode charge pump and the second voltage division circuit, the first comparator and the second comparator respectively compare corresponding reference voltages with outputs of the corresponding voltage division circuits, the OR gate circuit controls operation of the oscillator according to outputs of the two comparators, and an output end of the oscillator is connected with input ends of the two charge pumps. By the aid of the charge pump system, the method and the memory, generation speed of the reading and writing operation word line voltage can be increased.