The invention relates to a purification device, in particular to a novel purification device for rare earth liquid. The provided novel purification device for the rare earth liquid comprises a cylinder, a movable heating device and the like. A movable liquid adding device is arranged on the upper left portion of the cylinder. The upper end of a liquid discharge pipe is connected with the leftportion of the bottom of the cylinder in a welding mode. A valve I is installed on the liquid discharge pipe. The upper end of an output shaft of a rotary motor I is connected with the bottom of the cylinder in a welding mode. The bottom of the rotary motor I is connected with the top of a base in a bolted connection mode. According to the provided novel purification device for the rare earth liquid, the mode that the cylinder, the movable heating device and the movable liquid adding device are separated, maintenance and repair of the novel purification device are facilitated greatly for a worker,time and labor are saved, and enterprise resources are saved.