The present embodiments provide an acidic gas recovery apparatus or method capable of efficiently reducing emission of amine to the environment. In the embodiment, an acidic gas recovery apparatus 10A comprises: an acidic gas-absorber 11a; a regeneration tower 12; a gas-cleaner 11b; a cleaning liquid drawing-out line L23; an absorbing liquid drawing-out line L21; and an acidic component-remover 13A. The cleaning water 27c from the cleaning liquid drawing-out line L23 and a purified lean solution 23C from the absorbing liquid drawing-out line L21 are supplied to the acidic component-remover 13A. The acidic component-remover 13A comprises a cathode 53, an anode 54, an absorbing liquid-purification compartment 57 for removing acidic components from the objective lean solution 23B, and cleaning liquid compartments 58-1 and 58-2. The cleaning water 27 is supplied to the cleaning liquid compartments.