NOVELTY - Reinforced domestic sewage soil-treatment system comprises surface layer (1), percolation layer and gravel collecting layer (4) from top to down. The percolation layer is composed of a local earth-fine sand layer (2) and a fine sand layer (3). A water distribution percolation tank is arranged in the local earth-fine sand layer. A filter cloth pipe (13) is equipped within the water distribution pipe. The top of water distribution percolation tank is covered by non-woven fabric. A double layer-hole vertical pipe is inserted into surface layer.    USE - Reinforced domestic sewage soil-treatment system.    ADVANTAGE - The system reduces the volume of organic suspended substance and other pollutant entering into the earth treatment system to relieve blocking, increase hydraulic load and prolong the service life of the earth sewage treatment system. Operation condition can be monitored by increasing oxygen supply through the double layer-hole vertical pipe.    DETAILED DESCRIPTION - A reinforced domestic sewage soil-treatment system with internal filter cloth groove, comprises a surface layer (1), a percolation layer and a gravel collecting layer (4) from top to down in series. The percolation layer is composed of a local earth-fine sand layer (2) and a fine sand layer (3). An exhaust pipe (7) is provided at the bottom of the gravel collecting layer. A water distribution percolation tank is arranged in the local earth-fine sand layer. A water distribution pipe is installed within the water distribution percolation tank. A gap between water distribution pipe and water distribution percolation tank is filled with bioceramic particles. A filter cloth pipe (13) is equipped within the water distribution pipe. The top of water distribution percolation tank is covered by non-woven fabric. An intake valve (6) is positioned at one side of water distribution percolation tank. A double layer-hole vertical pipe is inserted into the surface layer. The double layer-hole vertical pipe is composed of an inner layer and an outer layer of exhaust pipes.    DESCRIPTION OF DRAWING(S) - The drawing is a perspective view of a reinforced domestic sewage soil-treatment system.    Surface layer (1)    Local earth-fine sand layer (2)    Fine sand layer (3)    Gravel collecting layer (4)    Intake valve (6)    Exhaust pipe (7)    Filter cloth pipe (13)