The oolitic beach in the third member of Feixianguan Formation in Tongnanba area contains a large gas bearing area，but the poor understanding of the rules of efficient accumulation and enrichment restricts its efficient exploration and development. Based on the comprehensive use of the geological and geophysical data，combined with the fine structural interpretation and analysis of the typical high-yield and stable-production wells，the formation mechanism of the high-efficiency gas reservoirs in the third member of Feixianguan Formation in Tongnanba area was discussed，and their natural gas accumulation process were analyzed，finally the direction for future exploration was clarified. The formation of the high-efficiency gas reservoirs in the third member of Feixianguan Formation in Hebachang Gasfield is mainly controlled by three factors.The high-quality reservoir with the high-energy oolitic beach is the base of the formation of high-efficiency gas reservoirs.The effective source-storage communication through the cracks to source rocks is the key to the high-efficient gas reservoir formation. Today’s favorable structural background promotes the high-efficiency gas reservoir formation. Tongjiang area is located at wing of Tongnanba anticline，in which the high-quality oolitic beach in the third member of Feixianguan Formation develops and the faults to source rocks develop in belt and in row，the source rocks and preservation conditions are superior. It is a favorable area that is expected to achieve efficient exploration and development in the near future.