It takes decades to build a landfill from civil construction to site closure, so the garbage disposal site is also called a mobile building that has gone through decades. Different from some places that pay attention to the basic construction of landfill, high-dimensional landfill technology pays more attention to the technical projects that need to be gradually built in the later operation of landfill, such as garbage compaction and covering, road construction in different landfill stages, rain and sewage diversion, etc. With the construction of these mobile technology projects, landfill can realize the comprehensive utilization of three-dimensional space of landfill, thus highlighting the advantages of high-dimensional filling. With the same landfill area of 36 1 hectare, the original design capacity of Laogang landfill is 20 million tons and its service life is 20 years through high-dimensional landfill. At present, the total amount of landfill can reach 80 million tons, and its service life has been increased to 50 years. In terms of leachate treatment, the fourth phase project of Laogang Landfill is trying to reduce the generation of leachate from the aspects of design, construction and operation, laying double-layer high-density polyethylene impervious membrane at the bottom of the landfill area, and orderly guiding the treatment of highly polluted leachate to avoid polluting groundwater. After landfill, biogas produced by fermentation in anaerobic environment also turns waste into treasure. During landfill, the methane collection pipe network will gradually promote the liquidity construction, and the methane in the landfill will be fully collected and sent to power generation. According to the calculation, the biogas generated per ton of landfill waste can generate more than 20,000 kWh of electricity, which has considerable additional economic benefits.