The invention relates to the field of petroleum and natural gas exploration and development, and especially relates to a high-resolution thin and interbedded reservoir gas containing performance detection method. The thin and interbedded reservoir gas containing performance detection method provided by the invention acquires a time-frequency spectrum of collected seismic signals through adopting generalized S transform. Compared with time-frequency conversion performed according to the traditional method, the method provided by the invention has higher time-frequency spectrum resolution and accuracy. Meanwhile, the thin and interbedded reservoir gas containing performance detection method combines a method of performing linear processing on the amplitude between a starting frequency fs andan ending frequency fe, thereby avoiding an operation of performing direct fitting by using data of a segment with the frequency f being greater than the starting frequency fs and less than the ending frequency fe to solve the slope, and greatly improving the resolution, which is reflected by the seismic signals, in the longitudinal direction of a target detection area.