A purifier, comprising: a shell in which a receiving space is formed; a purification assembly arranged in the receiving space, the purification assembly comprising: a support part; a coil assembly arranged on one side of the support part; a grille part connected to the support part, wherein the grille part and the support part form a mounting chamber in which an activated carbon element is placed; and a power supply assembly arranged on one side of the support part facing away from the coil assembly, wherein the power supply assembly is electrically connected to the coil assembly; the side of the support part facing away from the coil assembly is provided with a receiving cavity in which the power supply assembly is arranged; the purifier further comprises a cover plate, which is arranged on one side of the support part and closes the receiving cavity; and the power supply assembly is arranged on one side of the cover plate facing towards the support part, the power supply assembly comprising: a circuit board; a transformer arranged on one side of the circuit board; and a first plug connected to the transformer and configured to be connected to a mains power supply; characterized in that the coil assembly comprises a plurality of mounting columns arranged at intervals and multi-turn coils wound around the mounting columns, and slots are provided on one side of the support part facing towards the coil assembly, and each of the mounting columns is inserted into a respective slot. a shell in which a receiving space is formed; a purification assembly arranged in the receiving space, the purification assembly comprising: a support part; a coil assembly arranged on one side of the support part; a grille part connected to the support part, wherein the grille part and the support part form a mounting chamber in which an activated carbon element is placed; and a power supply assembly arranged on one side of the support part facing away from the coil assembly, wherein the power supply assembly is electrically connected to the coil assembly; the side of the support part facing away from the coil assembly is provided with a receiving cavity in which the power supply assembly is arranged; the purifier further comprises a cover plate, which is arranged on one side of the support part and closes the receiving cavity; and the power supply assembly is arranged on one side of the cover plate facing towards the support part, the power supply assembly comprising: a circuit board; a transformer arranged on one side of the circuit board; and a first plug connected to the transformer and configured to be connected to a mains power supply; characterized in that a support part; a coil assembly arranged on one side of the support part; a grille part connected to the support part, wherein the grille part and the support part form a mounting chamber in which an activated carbon element is placed; and a power supply assembly arranged on one side of the support part facing away from the coil assembly, wherein the power supply assembly is electrically connected to the coil assembly; the side of the support part facing away from the coil assembly is provided with a receiving cavity in which the power supply assembly is arranged; the purifier further comprises a cover plate, which is arranged on one side of the support part and closes the receiving cavity; and the power supply assembly is arranged on one side of the cover plate facing towards the support part, the power supply assembly comprising: a circuit board; a transformer arranged on one side of the circuit board; and a first plug connected to the transformer and configured to be connected to a mains power supply; characterized in that the coil assembly comprises a plurality of mounting columns arranged at intervals and multi-turn coils wound around the mounting columns, and slots are provided on one side of the support part facing towards the coil assembly, and each of the mounting columns is inserted into a respective slot.