The invention relates to the field of environmental purification, and in particular relates to a purifying factor generator and an environmental purifying device. The purifying factor generator comprises a broad spectrum UV lamp, and a first magnetic material layer, a second magnetic material layer, a first photocatalyst catalytic layer and a second photocatalyst catalytic layer which externally sleeve the broad spectrum UV lamp in turn. The broad spectrum UV lamp has a traction effect when a current comes due to the arrangement of the first magnetic material layer and the second magnetic material layer externally sleeving the broad spectrum UV lamp in turn, the traction effect makes energy transfer more centralized, and more purification factors are generated. Ultraviolet ray reacts morefully under the action of the first photocatalyst catalytic layer and the second photocatalyst catalytic layer, more purification factors are generated, and light energy in a reaction chamber can be further improved. Photolysis, photochemical reaction and catalytic reaction are increased, and produced ozone is more unstable and not easy to accumulate.