The invention relates to an electromagnetic lock. The electromagnetic lock comprises a mounting shell, wherein a holding space is formed in the mounting shell; an electromagnet, an iron core, an upper fluted disc, a lower fluted disc and a shifting fork are arranged in sequence in the holding space; the electromagnet is arranged on the upper portion of the mounting shell, and the iron core is coaxially and fixedly connected with the upper fluted disc; the lower fluted disc is coaxially and fixedly connected with the shifting fork; a gap exists between the electromagnet and the iron core; opposite sides of the upper fluted disc and the lower fluted disc are provided with teeth which can be meshed together respectively; a connecting shaft between the lower fluted disc and the shifting fork is provided with a torsion spring for returning the shifting fork to an unlocking position. The teeth on the upper fluted disc and the lower fluted disc are T-shaped teeth. Bumps for preventing the iron core from rotating and limiting the position of the lower fluted disc are formed in the mounting shell. The electromagnetic lock further comprises an unlocking arm which is arranged on the upper fluted disc and extends out of the surface of the mounting shell. Compared with the prior art, the electromagnetic lock has the advantages of realization of locking of a lockset by means of mutual meshing of the fluted discs and unlocking by means of adsorption of a magnet, simple structure, easiness in implementation, less parts and convenience in maintenance.