Fog generation system and fog generation method

The invention discloses a fog generation system and a fog generation method and relates to the stage performance supporting field. The fog generation system comprises a hot steam system and a cold air system; the hot steam system comprises a steam generator and a hot air pipe; the cold air system comprises a water tank, a radiator and a refrigerating system, the water tank is communicated with the radiator through a water inlet pipe, the refrigerating system bypasses the water inlet pipe to cool the water in the water inlet pipe, the radiator is communicated with the water tank through a water return pipe, and the opening end of the cold air pipe is opposite to the opening end of the hot air pipe. The fog generation system is used for replacing a smoke pump, the system is easy to maintain, the cost is much lower than that of the smoke pump, the ingredient of the fog is water fog, the water fog does not have stimulation and harm to a performer, and the body health of the performer is guaranteed.