NOVELTY - A buried sewage ecological treatment system comprises relatively closed cabinet box (1) provided with water distribution system (2), macroporous high permeability filter layer (3), anaerobic denitrification layer (4), percolation layer (5), draining device (6), and water collection gravel bed (7) in which anaerobic denitrification layer, percolation layer, and water collection gravel bed are sequentially arranged from top to bottom of cabinet box, macroporous high permeability filter layer and cabinet box have inner space, and interval of cabinet box is provided with exhaust port (11).    USE - A buried sewage ecological treatment system (claimed).    ADVANTAGE - Buried sewage ecological treatment system does not need power consumption and high permeability.    DETAILED DESCRIPTION - A buried sewage ecological treatment system comprises relatively closed cabinet box (1) provided with water distribution system (2), macroporous high permeability filter layer (3), anaerobic denitrification layer (4), percolation layer (5), draining device (6), and water collection gravel bed (7) in which anaerobic denitrification layer, percolation layer, and water collection gravel bed are sequentially arranged from top to bottom of cabinet box, macroporous high permeability filter layer and cabinet box have inner space, interval of cabinet box is provided with exhaust port (11), interval of cabinet box or macroporous high permeability filter layer is provided with intake port (12), water distribution system has sprinkler head (21) located above macroporous high permeability filter layer, and draining device is provided with drainage pipe (61) disposed below percolation layer.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic diagram of a buried sewage ecological treatment system.    Cabinet box (1)    Water distribution system (2)    Macroporous high permeability filter layer (3)    Anaerobic denitrification layer (4)    Percolation layer (5)    Draining device (6)    Water collection gravel bed (7)    Exhaust port (11)    Intake port (12)    Sprinkler head (21)    Drainage pipe (61)