The invention discloses a firefighting emergency power cabinet capable of preventing a storage battery from being thieved. The firefighting emergency power cabinet comprises a firefighting emergency power cabinet body, wherein the firefighting emergency power cabinet body is divided into an upper equipment cabinet body and a lower storage battery cabinet body; a partition plate is arranged between the upper equipment cabinet body and the lower storage battery cabinet body; a groove is formed in the surface, facing the partition plate, of a bottom plate of the lower storage battery cabinet body; an antitheft plate is inserted into the groove; the partition plate is provided with an antitheft plate insertion hole; the end, far away from the groove, of the antitheft plate is inserted into the antitheft plate insertion hole; a sealing groove is formed between the end, far away from the groove, of the antitheft plate and the inner wall of the antitheft plate insertion hole; a material is poured to form a sealing layer in the sealing groove.