Abstract: In recent years, major breakthroughs of natural gas exploration have been made in the bedrock buried-hill of central uplift zone in northern Songliao Basin, demonstrating good exploration prospects. However, the main controlling factors and accumulation patterns of natural gas reservoirs in the study area are still unclear, which seriously restricts the gas reservoir exploration process. Based on the prospecting well and seismic data, as well as analyses of core, thine section, and field emission scanning electron microscopy, this paper systematically analyzes the types of bedrock buried-hill gas reservoirs in the central uplift zone, reveals the main controlling factors of natural gas accumulation, and establishes a gas accumulation model. The results show that the main controlling factors of gas accumulation in the bedrock buried-hill of central uplift zone of northern Songliao Basin include hydrocarbon supply conditions, reservoir conditions, transport system and preservation conditions. Among them, hydrocarbon supply conditions control the distribution of gas reservoir to a certain extent, reservoir conditions control the scale of gas reservoir, transport system controls the migration and accumulation of natural gas, and preservation conditions control the enrichment of natural gas. The accumulation of natural gas occurred in depositional period from the end of Quantou Formation to the Yaojia Formation, which is the first period of gas charging. There are two types of gas accumulation patterns in the study area, i.e., gas transport by fault-unconformity then accumulation in weathering crust, and transport by fault-fracture then accumulation in weathering crust and bedrock inner. The research results provide reference for advancing the natural gas exploration and development in bedrock buried-hills.