NOVELTY - A ventilation and collection system comprises an air distribution pipe (4) at bottom of compost stacking (16), and a foundation table (1). The stacks are distributed to elongated stack in parallel. The air distribution pipe is spread in interior of foundation table at bottom of each stack, where the air distribution pipe is distributed with ventilation holes. The foundation table has a groove in which a ventilation protective layer is spread. One end of air distribution pipe is connected to a main air distribution pipe connecting a fan (9) while the other end is sealed by a pipe plug (17).    USE - System used for ventilation and collection of waste gas and leachate from compost stacking (claimed).    ADVANTAGE - The system is simple in structure and convenient to operate, and provides better oxygenating state of the whole stacking.    DETAILED DESCRIPTION - A ventilation and collection system comprises an air distribution pipe (4) at bottom of compost stacking (16), and a foundation table (1). The stacks are distributed to an elongated stack in parallel. The air distribution pipe is spread in interior of the foundation table at bottom of each stack along the length direction, where the air distribution pipe is distributed with ventilation holes. The foundation table is above ventilation holes of the air distribution pipe and has a groove in which a ventilation protective layer is spread. One end of the air distribution pipe is connected to a main air distribution pipe connecting a fan (9) while the other end is sealed by a pipe plug (17). One sealed end of the air distribution pipe is downward and has a leachate outflow port. The pipe plug and the leachate outflow port are peripherally provided with clearing grooves in which a leachate cache discharging device connected to the leachate outflow port is mounted. One side of the clearing groove is provided with a leachate discharge port that is connected to a wastewater discharge pipe. An air drafting pipeline (13) is arranged above the stacking along the length direction, where the bottom of which is distributed with suction openings. The drafting pipeline is connected to a main exhaust pipe (29). An INDEPENDENT CLAIM is included for ventilation and collection of waste gas and leachate from compost stacking, comprising providing ventilation by placing the stacking to elongated stack in parallel; spreading air distribution pipe in interior of foundation table at bottom of stacking along the length direction of the stacking; connecting one end of the air distribution pipe to the main air distribution pipe connecting the fan while sealing the other end by the pipe plug; and spreading the ventilated protective layer on the air distribution pipe, in which air enters the stacking through the ventilation holes on the air distribution pipe and then spreads in a semicircular manner equally. Then, collection of leachate is performed by flowing leachate to inner part of the air distribution pipe through the ventilation holes. The waste gas of stacking is collected by providing upper part of each stack with air drafting pipeline along the length direction of the stacking; distributing with suction openings the bottom of the air drafting pipeline; mounting air drafting pipeline with electric valve that is connected to the air drafting control system; connecting air drafting pipeline to main exhaust pipe connecting draught fan; and controlling opening of the valve by the ventilation signal and compost stage of each stacking by the air draft control system so as to control amount of air draft.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the ventilation and collection system.    Foundation table (1)    Air distribution pipe (4)    Fan (9)    Air drafting pipeline (13)    Compost stack (16)    Pipe plug (17)    Main exhaust pipe (29)