Abstract: In China, large carbonate gas fields (LCGFs) are mainly distributed in three large cratonic basins, i.e., Sichuan, Tarim, and Ordos Basin. Stratigraphically, the reservoirs in these LCGFs are concentrated in five large groups of formations, including the Middle-Lower Triassic, Upper Permian, Carboniferous, Ordovician, and Sinian strata. By the end of 2010, the proven reserves of 12 LCGFs are 1.69×10⁸m³, i.e., 27.2% of the total reserves of 45 large gas fields across the country. The LCGFs consist of single or multiple independent large-medium gas reservoirs. The formations dominantly feature low porosity which increases with old-to-new formation era. Reservoir formations with the reserves of single reservoir>10×10⁸m³ generally have the average permeability >1 mD, net pay thickness of 15-75 m, and gas-bearing area of 10-100 km². The reserves abundance mainly occurs at a medium-high level (>5×10⁸m³/km²) except for that in Jingbian gas field, Ordos Basin (0.56×10⁸m³/km²). The burial depth of reservoirs varies in a large range of 1 000-6 370 m, which is classified as super deep and deep-mid-deep. The pressure coefficient of reservoirs is generally <1.3 (i.e., normal pressure) except that in Moxi gas field (>2.0). Complex gas reservoirs formed by tectonic and lithologic traps (including buried hills) are the major reservoir type of LCGFs. Effective spatiotemporal configurations of a variety of factors, including large-scale inheriting paleo-uplift, high-intensity filling of multi-sets of quality source rocks, effective transport in fractures and erosion grooves, large-scale accumulation of dissolved pore spaces, effective seal of gypsum-salt and argillite rocks, are responsible for large-scale enrichment and accumulation of natural gas in carbonate rocks. The formation of dry gas reservoir in high geothermal field by crude oil cracking in paleo-reservoir, mixing of coal-derived and oil-cracked gases and the formation of condensate gas reservoir by gas cutting in low geothermal field are the 3 typical modes of gas accumulation in LCGFs.