Disclosed is an electronic device comprising an equalizer and an equalizer adjustment system. The equalizer adjustment system for adjusting the settings of the equalizer comprises a testing module, a parameter calculation module and a parameter setting module. The testing module is used to provide a hearing test procedure for assessing a users physiological condition of hearing so that after the user completes the hearing test procedure, the parameter calculation module and the parameter setting module can adjust the settings of the equalizer according to the users physiological condition of hearing.