The invention discloses a water-saving and energy-saving type steam dishwasher, and relates to the field of dishwashers. The water-saving and energy-saving type steam dishwasher comprises an inner container, a steam generating device, a steam injection system, an upper bowl basket and a lower bowl basket, wherein the upper bowl basket and the lower bowl basket are fixedly arranged in the inner container in sequence; the steam generating device is used for providing steam for the steam injection system; the steam injection system comprises an upper air injection device, a middle air injection device and a lower air injection device; nozzles are arranged on the upper side and the lower side of the middle air injection device; the upper air injection device is arranged above the upper bowl basket; the lower air injection device is arranged below the lower bowl basket; the middle air injection device is arranged between the upper bowl basket and the lower bowl basket; the steam injection system can rotate when steam is injected, and can realize switching and selection of a mode of cleaning the lower bowl basket separately and a mode of cleaning the upper and lower bowl baskets in a unified way; the steam generating device comprises a heat insulation shell and a water tank; and the heat insulation shell communicates with the inner container through a pipeline. The steam dishwasher is flexible in cleaning mode, and steam waste heat can be recycled, so that the effects of saving water and energy are achieved.