The invention discloses an anti-electromagnetic protection apparatus, belongs to an initiating explosive device of a thermal battery product. The anti-electromagnetic protection apparatus comprises a filtering electric connector, an attenuator and a metal shell; the two electrodes of the filtering electric connector are connected with the initiating explosive device in series, are grounded through metal pressing strips in a spot welding manner, and finally, are coated with the metal shell entirely; and the attenuator is connected with the initiating explosive device in series through an outgoing line and is grounded through the metal shell for coating the initiating explosive device in a threaded connection manner. By virtue of addition of the filtering electric connector and the attenuator on the power supply and the gas source activation loops of the novel thermal battery product-ground energy, the anti-electromagnetic interference performance of the thermal battery product is improved, and fighting capacity of weapons in a complex electromagnetic environment can be ensured.