The invention belongs to the technical field of agricultural greenhouses, and specifically discloses a water self-supplying agricultural
greenhouse system. The
system includes an optical
system disposed in the
greenhouse, a water generating system disposed on one side of the optical system and a blower connected with the water generating system, wherein the optical system includes a
Fresnel lens,a first concave lens disposed at the condensing point of the
Fresnel lens and solar limited-frequency reflecting glass disposed under the first concave lens, and the water generating system comprisesan insulating layer, a selective absorbing
coating and a
moisture adsorbing layer; the
moisture adsorbing layer includes a adsorbent material layer and a
metal thermally conductive rod, and the insulating layer is transmissive to
infrared light reflected by the solar limited-frequency reflecting glass. Through the system, gradient utilization of
sunlight is realized, cleanness and
environmental protection can be achieved, consumption of non-
renewable energy is reduced, and meanwhile the water self-supplying function of the
greenhouse can be achieved; in a water-deficient area, not only agricultural water can be provided, but also supplementing of domestic water can be achieved, so that the problem of water shortage is alleviated.