Based on observation and analysis of samples from outcrops and wells,a set of 30~50m thick Lower Cambrian Niutitang carbonaceous black shale is deep buried in Suiyang area,in the north of Guizhou.Thick regional overlying cap make the shale good condition of gas preservation so it is a good target of shale gas prospect in Guizhou.The analysis result shows that TOC is in the range of 1.5,~3, and Ro changes in 1.0,~3.5, in the gas-bearing black shale.The total desorbed gas content of 0.3~1.2m3/t and the potential gas reserves of 639.5 × 108m3 mean great resources potential in this area.It is indicated that shale gas can accumulate in the low positions of arches in this area.It is suggested that the best favorable prospecting area of shale gas is in the northeast of Suiyang area in the future.