NOVELTY - A solar greenhouse sewage treatment system comprises concrete pool wall (8), partition wall (12), reinforced concrete base (9), at least two water inlet pipes (10), water outlet pipe (4), soil layer (3), lime layer (5), small pebbles (6), large pebbles (7), surrounding wall (11), and plastic film (1) buckled on four sides of the surrounding wall.    USE - Solar greenhouse sewage treatment system for constructed wetland (claimed) employed in treating, e.g. domestic sewage.    ADVANTAGE - The treatment system utilizes solar irradiation plastic film to acquire sufficient amount of solar energy which can be stored in the system so as to enable the system to maintain its normal temperature operation during winter or cold season and ensure the capacity for chemical oxygen demand (COD) and total nitrogen (TN) removal by the aquatic plants in the constructed wetland system.    DETAILED DESCRIPTION - A solar greenhouse sewage treatment system comprises concrete pool wall (8); partition wall (12) having one end connected to the sidewall of the concrete pool wall and another end located at a distance from the opposing sidewall of the concrete pool wall to provide a flow passage for the water; at least two water inlet pipes (10) provided at the front part of the concrete pool wall and inserted into the large or small pebbles; water outlet pipe (4) provided at the back part of the concrete pool wall; surrounding wall (11) arranged on the upper edge of the upper end of the concrete pool wall; plastic film (1) buckled on four sides of the surrounding wall; and reinforced concrete base (9), large pebbles (7), small pebbles (6), lime layer, (5) and soil layer (3) orderly arranged from bottom to top. One side of the surrounding wall is set higher than its opposing side, and the top portion of the two opposing sides are connected by the buckled plastic film.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic diagram illustrating the solar greenhouse sewage treatment system.    Plastic film (1)    Soil layer (3)    Water outlet pipe (4)    Lime layer (5)    Small pebbles (6)    Large pebbles (7)    Concrete pool wall (8)    Reinforced concrete base (9)    Water inlet pipe (10)    Surrounding wall (11)    Partition wall (12)