The invention discloses a gas buffer structure for an electromagnetic repulsion actuator. The gas buffer structure comprises an electromagnetic repulsion disk, an upper end connecting rod, a lower end connecting rod, a closing drive coil, a closing drive coil package, an opening drive coil, an opening drive coil package, an upper end connecting rod guiding device, an upper end connecting rod sliding seal device, a lower end connecting rod guiding device, a lower end connecting rod sliding seal device, a side wall, a repulsion disk sliding seal device, an upper air chamber, an upper air chamber one-way air inlet valve, a lower air chamber, and a lower air chamber one-way air inlet valve. The gas buffer structure for the electromagnetic repulsion actuator provided by the invention effectively buffers movable parts of the electromagnetic repulsion mechanism, saves the traditional oil buffer components, and has no mechanical collision; and besides, the structure is simple and compact, and the service life is long.