The steam cleaner uses high-temperature, high-pressure steam to clean floors, doors, windows and clothes, range hoods, air conditioners, microwave ovens, and sanitary ware for surface sterilization, removing dust and bacteria, and environmentally friendly and sanitary. It can prevent allergies and eliminate stubborn stains and oil stains. No chemical reagents are needed, and there is almost no damage to cleaning items. While enjoying the scientific and sanitary environment, there will be no secondary pollution to the environment.