NOVELTY - Collection of marsh gas from garbage landfill involves: (1) according to landfill terrain and operating conditions, dividing the landfill into completed landfills and pending landfill; (2) excavation of the completed landfill; (3) preparing a set of perforated high density polyethylene pipe; utilization of methane gas or biogas storage collection equipment; (4) covering with a high-density polyethylene geomembrane the completed landfill and with high-density polyethylene perforated pipe located below the high-density polyethylene geomembrane, and collecting marsh gas.    USE - The method is useful for collecting marsh gas from garbage landfill (claimed).    ADVANTAGE - The method is simple, small investment, good methane collection, and simple and convenient maintenance operations.    DETAILED DESCRIPTION - Collection of marsh gas from garbage landfill involves: (1) according to landfill terrain and operating conditions, dividing the landfill into completed landfills and pending landfill; (2) excavation of the completed landfill from the top pile region set of grooves, a set of trenches and forming distribution grid; (3) preparing a set of perforated high density polyethylene pipe, the high-density polyethylene perforated pipe laid horizontally along the trench, using hot-melt welding method to connect each high density polyethylene perforated pipe ends at its interchange with biogas collection charge; utilization of methane gas or biogas storage collection equipment; (4) covering with a high-density polyethylene geomembrane the completed landfill and with high-density polyethylene perforated pipe located below the high-density polyethylene geomembrane, and collecting garbage landfill marsh gas. An INDEPENDENT CLAIM is included for marsh gas from garbage landfill collection system, where collecting system partitions are arranged on the garbage landfill site in the filling area, where the collecting system comprises a set of high density polyethylene perforated pipe and a biogas collecting main pipe, a high density polyethylene through hole arranged along a substantially horizontal direction, the marsh gas collecting main pipe arranged along a direction substantially vertical to the high density polyethylene through a laying groove to the top of the stack is filled excavating garbage is buried, a high density polyethylene through hole pipe are connected to the bottom of the marsh gas collecting main pipe, a garbage landfill stack top is covered with a high-density polyethylene geomembrane, the high density polyethylene through hole pipe is high density polyethylene geo-membrane of the biogas collecting main pipe through high density polyethylene geo-membrane and is connected with the marsh gas storage device or a marsh gas using external connector connected with the external apparatus.