The present invention relates to a lithium recovery device and recovery method. The device of the present invention comprises: a first electrode; a second electrode; and a power supply device. In the lithium recovery device of the present invention, a lithium-containing fluid has immersed therein: a first electrode in which an adsorptive agent containing a manganese oxide is coated onto the surface of a carrier of stainless steel material in the form of a mesh or perforated sheet; and a second electrode facing the first electrode. In this immersed state, a current is applied to the first electrode and second electrode, such that lithium attaches to the adsorptive agent of the first electrode and thus not only can the device be made larger in size but also the energy efficiency and economic advantages are outstanding.