The invention relates to a novel machine oil magnetizing filtering device. The novel machine oil magnetizing filtering device comprises a shell, a filtering element and a magnet, wherein the shell has an oil inlet hole and an oil outlet hole, the filtering element is arranged in the shell and is positioned between the oil inlet hole and the oil outlet hole, and the magnet is supported by a support member in the shell. As the support member is connected with the shell, when the novel machine oil magnetizing filtering device provided by the invention needs maintenance operation, the support member and the filtering element which are assembled into a whole can be separated from the shell of the base only by detaching the shell of a cover, then a support is detached, so that the operations of replacing the filtering element and washing the magnet can be conveniently carried out, conversely, after maintenance, the filtering device can be conveniently assembled. With the novel machine oil magnetizing filtering device provided by the invention, the accurate locating of the filtering element and the magnet can be realized, and the effect of the filtering device is guaranteed; and through well-designed integral structure, the supporting effect can be realized, and meanwhile, assembling and disassembling can be conveniently carried out, thus facilitating follow-up maintenance operation.