NOVELTY - A low-temperature efficient artificial moss wetland system comprises a bed body (5), a substrate layer and moss plants (11). One side of the bed body is water inlet side and arranged with perforated water distributing tubes (2) connected with water inlet tube (1), and the other side is a water outlet side and arranged with perforated collecting tubes (3) connected with water outlet tube (4).    USE - Efficient artificial moss wetland system used for processing domestic sewage of low-temperature area.    ADVANTAGE - At temperature below 10 degrees C, the system has excellent processing effect to main pollutants like ammonia nitrogen, organic matter, total phosphor and suspending matters.    DETAILED DESCRIPTION - A low-temperature efficient artificial moss wetland system comprises a bed body (5), a substrate layer and moss plants (11). One side of the bed body is water inlet side and arranged with perforated water distributing tubes (2) connected with water inlet tube (1), and the other side is a water outlet side and arranged with perforated collecting tubes (3) connected with water outlet tube (4). Aspect ratio of the bed body is 2:1 to 10: 1 and height is 20-40 cm. The substrate layer is positioned on the bed body and composed of a bottom layer (8), a medium layer (9) and an upper layer (10). The bottom layer has a thickness of 4-5 cm. The medium layer has a thickness of 10-20 cm and made by compounding soil with fine sand at a ratio of 2:1 to 3:1. The upper layer has a thickness of 10-20 cm and made by compounding underlying soil of antarctic moss wetland surface with local soil at ratio of 1:1 to 1:2. Moss plants are positioned above the substrate layer and have height of 7-10 cm. The planting density is 1x 105 to 4x 105 plants/m2. The moos plants are Bryum muehlenbeckii. Separation boards parallel or vertical to the water inlet direction can be arranged at interior of the bed body.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic view of the low-temperature efficient artificial moss wetland system.    Water inlet tube (1)    Perforated water distributing tubes (2)    Perforated collecting tubes (3)    Water outlet tube (4)    Bed body (5)    Bottom layer (8)    Medium layer (9)    Upper layer (10)    Moss plants (11)