Abstract: Background Due to their chemical inertness and the differences in isotopic composition of their reservoirs, noble gases have become important tools for tracing the sources and evolution processes of geological fluids. As a noble gas tracer, helium is also a scarce resource, its enrichment mechanism and exploration potential have attracted much attention. Methods By summarizing the geochemical data of typical gas reservoirs, volcanic gases, and surface hot springs at home and abroad, Analysis of the interfering factors and terminal value screening in the source apportionment of rare gases, and summarizes the applications of noble gas isotopes in multiple disciplines such as constructing reservoir models and restoring fluid distribution. Based on the generation potential and migration and accumulation mechanisms of helium, the theoretical understanding of helium reservoir formation is refined. Advances and Prospects Combining case studies, three ideal helium enrichment types are proposed: Structural activities increase helium flux type (such as the Lhasa Block in the Qinghai-Tibet Plateau), deep-buried high-pressure shale with self-sealing enrichment (such as the Cambrian and Silurian shale gas reservoirs in the Sichuan Basin), and Water-soluble helium desolvation and alkane gas-coupled enrichment reservoir type (such as the Hetianhe Gas Field in the Tarim Basin). The Lhasa Block exhibits a theoretical crustal helium flux 221-78,056 times the global average, with numerical simulations constraining it to 6,392-9,284 times, suggesting that Lhasa Block is an ideal helium accumulation area. Considering the diffusivity of helium gas is significantly reduced in high-pressure nanopores, and the early peak of hydrocarbon generation prolongs the duration of the "Preservation and enrichment stage"， this indicates that deep buried ancient shale gas reservoirs may be the ideal type for helium enrichment. During the migration of late-stage accumulated alkane gases into traps, they are capable of extracting helium from ancient formation water, leading to its enrichment, which is also an ideal helium accumulation type.