A method for controlling first and second hydraulic pumps in a construction machine, the method comprising: an engine dynamic characteristic change checking step (S20) of checking whether a dynamic characteristic of an engine deviates from a predetermined permissible range when a load is applied to the first and second hydraulic pumps and a pump load reaches pump torque required by the first and second hydraulic pumps; a pump load applying step (S40) of when the dynamic characteristic of the engine deviates from the predetermined permissible range in the engine dynamic characteristic change checking step (S20), applying a pump load to the first and second hydraulic pumps so as to increase the pump torque to a predetermined torque with a predetermined change rate; an information collecting step (S50) of collecting information including engine speed information, swash plate angle information of the pump, and pressure information of discharged working oil, which is generated when the pump load is applied in the pump load applying step (S40); a map data generating step (S60) of generating a new torque change rate map ; and an updating step (S80) for updating an existing torque change rate map to the new torque change rate map generated in the map data generating step (S60), characterized in that the new torque change rate map is generated by generating a torque change rate, which is to increase a quantity of engine speed with respect to time, for each load section based on the information collected in the information collecting step (S50) and that the first and second hydraulic pumps are controlled by the new torque change rate map updated in the updating step (S80). an engine dynamic characteristic change checking step (S20) of checking whether a dynamic characteristic of an engine deviates from a predetermined permissible range when a load is applied to the first and second hydraulic pumps and a pump load reaches pump torque required by the first and second hydraulic pumps; a pump load applying step (S40) of when the dynamic characteristic of the engine deviates from the predetermined permissible range in the engine dynamic characteristic change checking step (S20), applying a pump load to the first and second hydraulic pumps so as to increase the pump torque to a predetermined torque with a predetermined change rate; an information collecting step (S50) of collecting information including engine speed information, swash plate angle information of the pump, and pressure information of discharged working oil, which is generated when the pump load is applied in the pump load applying step (S40); a map data generating step (S60) of generating a new torque change rate map ; and an updating step (S80) for updating an existing torque change rate map to the new torque change rate map generated in the map data generating step (S60), characterized in that the new torque change rate map is generated by generating a torque change rate, which is to increase a quantity of engine speed with respect to time, for each load section based on the information collected in the information collecting step (S50) and that the first and second hydraulic pumps are controlled by the new torque change rate map updated in the updating step (S80). <EOS>