A secondary battery diagnosing apparatus, comprising: a memory unit configured to store a positive electrode reference profile and a negative electrode reference profile for charge or discharge of a reference battery, wherein the positive electrode reference profile and the negative electrode reference profile are profiles indicating a positive electrode voltage and a negative electrode voltage for each capacity; a voltage measuring unit configured to measure a voltage of a target battery during a charge or discharge process; and a processor configured to: - generate a charge and discharge measurement profile based on the voltage measured by the voltage measuring unit during the charge or discharge process, wherein the charge and discharge measurement profile indicates a voltage change according to the capacity of the target battery, - compare a simulation profile obtained from the positive electrode reference profile and the negative electrode reference profile stored in the memory unit with the generated charge and discharge measurement profile, and - determine a positive electrode adjustment profile and a negative electrode adjustment profile so that an error between the simulation profile and the charge and discharge measurement profile is within a predetermined level. a memory unit configured to store a positive electrode reference profile and a negative electrode reference profile for charge or discharge of a reference battery, wherein the positive electrode reference profile and the negative electrode reference profile are profiles indicating a positive electrode voltage and a negative electrode voltage for each capacity; a voltage measuring unit configured to measure a voltage of a target battery during a charge or discharge process; and a processor configured to: - generate a charge and discharge measurement profile based on the voltage measured by the voltage measuring unit during the charge or discharge process, wherein the charge and discharge measurement profile indicates a voltage change according to the capacity of the target battery, - compare a simulation profile obtained from the positive electrode reference profile and the negative electrode reference profile stored in the memory unit with the generated charge and discharge measurement profile, and - determine a positive electrode adjustment profile and a negative electrode adjustment profile so that an error between the simulation profile and the charge and discharge measurement profile is within a predetermined level. - generate a charge and discharge measurement profile based on the voltage measured by the voltage measuring unit during the charge or discharge process, wherein the charge and discharge measurement profile indicates a voltage change according to the capacity of the target battery, - compare a simulation profile obtained from the positive electrode reference profile and the negative electrode reference profile stored in the memory unit with the generated charge and discharge measurement profile, and - determine a positive electrode adjustment profile and a negative electrode adjustment profile so that an error between the simulation profile and the charge and discharge measurement profile is within a predetermined level.