Abstract: There are various types of gas reservoirs onshore in China, which are divided into four types based on their comprehensive geological conditions and exploration potential, i.e., the ancient carbonate gas reservoir, gas reservoir in foreland thrust belt, tight sandstone gas reservoir and bedrock-volcanic rock gas reservoir. By applying the advanced geological theory and the recent exploration progress, as well as the basic gas accumulation conditions, main controlling factors for gas enrichment of different types of gas reservoir in China are systematically summarized from the aspect of key geological factors controlling hydrocarbon accumulation, so as to guide onshore gas exploration in the next step. The results show that: The marine carbonate gas reservoir is controlled by high-quality source rocks, widely developed reservoir and large-scale trap; The gas reservoir in foreland thrust belt is controlled by high-quality source rocks, reservoir-cap rock assemblage and structural trap; The tight sandstone gas reservoir is controlled by tectonic settings, pattern of reservoir-cap rock assemblage and reservoir distribution; While the bedrock-volcanic rock gas reservoir is controlled by gas generation sag, reservoir type and gas transport system. In addition, the enrichment laws of large gas fields are summarized: (1) The macro distribution of gas reservoir is determined by highquality source rocks, and large-scale gas reservoirs are generally distributed in source kitchen and its periphery; (2) The high-quality reservoirs have diversified types and are widely distributed, which significantly control the enrichment of natural gas; (3) The multi-stage cap rock deposited in stable tectonic period is a key factor for multi-stage gas accumulation; (4) The favorable area for gas accumulation is controlled by the current tectonic framework. The results indicate that the key exploration zones of different types of gas reservoirs in the next step should be focused in Sichuan Basin, Ordos Basin and Tarim Basin.