In order to discuss the feasibility of thin reservoirs prediction based on traditional 3D seismic data of block J31 in Liaohe basin, the spectral simulation inversion technology and face controlled geological statistics inversion technology were used jointly based on the analysis of resolution principle and seismic inversion principle. First of all, it is necessary to carry out the rock physics analysis of target interval and carry out the spectral simulation inversion technology and face controlled geological statistics inversion technology research simultaneously. We extract the dominant frequency component from inversion results and integrate them into a data cube. Finally we interpret the outcome data and predict distribution of thin reservoirs with the threshold value. The following results have been achieved: the thin reservoir of block J31extends towards the southeast of the fault, with an area of about 1.2km2, and the prediction results have proved to be reliable by the drilling data. Based on the result of spectral simulation inversion and face controlled geological statistics inversion, we extract the low frequency component 0～9Hz of low frequency model, the frequency component 9～45Hz of result of the spectral simulation inversion, the high frequency component 45～120Hz of result of face controlled geological statistics inversion and integrate them into a data cube. With this data, the 8m thin reservoir can be predicted. This research provides reference for the prediction of same reservoir.