The invention relates to a demagnetization device and a shopping settlement device, and relates to the technical field of intelligent settlement devices. The demagnetization device comprises a demagnetization bottom surface and at least one demagnetization side surface, the demagnetization bottom surface comprises at least one demagnetization coil, the demagnetization side surface comprises at least one demagnetization coil, and the demagnetization bottom surface and demagnetization side surface form a demagnetization space over the demagnetization bottom surface. According to the demagnetization device, demagnetization coils are arranged in the demagnetization bottom surface and demagnetization side surface respectively, an electromagnetic field with uniform intensity is formed in the demagnetization space, effective demagnetization can be realized by the demagnetization bottom surface as well as in the stereoscopic demagnetization space, and the efficiency and success rate of demagnetization can be both improved greatly.