An electromagnetic cradle includes a support frame, a swinging table, multiple abutting members, a magnetic box, and an electromagnetic device. The support frame includes two support rods each provided with multiple rollers. The abutting members are secured to the bottom of the swinging table and rest on the rollers respectively. The magnetic box is secured to the bottom of the table board. The electromagnetic device is secured to the support frame. The electromagnetic device is located under and corresponds to the magnetic box. The electromagnetic device produces a magnetic force to attract or repel the magnetic box that is mounted on the swinging table, so as to pull or push the swinging table, such that the swinging table horizontally swings successively and reciprocatingly.