Abstract: As a wide range of crustal uplift movement after the deposition of Dengying formation, Tongwan movement had played a crucial role in formation of the south China Dengying formation quality reservoir. Tongwan uplift movement makes the top of Dengying formation be exposed to the atmosphere freshwater envioronment, which formed palaeo weathering crust reservoir. Starting from the Nanshanping ancient reservoir, combined with the karst features of Sinian reservoir in other regions, the control action to south China upper Sinian Dengying formation dolomite by Tongwan movement has been discussed in the paper, after this recarth, it can provide a guiding significance for searching quality carbonate reservoirs of South China.