The invention discloses environment-friendly equipment utilizing nonconventional water source for water-saving irrigation of dry farming plants. The environment-friendly equipment comprises an irrigator body, a storage cavity with an upward opening is arranged in the irrigator body, a water collection mechanism is arranged in the storage cavity and comprises two rotatable rotating shafts, a thin film roll is wound between the rotating shafts which can unfold the thin film roll, a drainage mechanism is arranged on the lower side of the water collection mechanism and comprises four arc-shaped plates which can be unfolded outwards, and a plastic film is mounted among the arc-shaped plates. The equipment can gather water vapor in air at night, thereby being suitable for being used in draughtyand water-lacking environment; the equipment is operated purely through manpower, thereby being energy-saving, high in suitability and needless of energy supplementing; for planting environment of thedry farming plants, the equipment makes holes for irrigation to enable water to directly enter roots of the dry farming plants, so that water loss is reduced, water adaption is further reduced, and water resources are saved.