In order to predict the distribution of the diagenetic stages and the secondary pore zones in the deep of the Songliao basin and to study the matching relationships between the pore developing history and the other oil reservoir forming elements, we combined the clastic diagenetic theory with numerical modeling and established an integrated model for modeling diagenesis and predicting secondary pore zones on the base of effect-oriented models and process-oriented models. As the modeling results of the Shengping area of the Songliao basin show, at the end of the Quantou age, the Denglouku Formation got into the late diagenetic stage A1,in which the source rocks penetrated the petroleum-generation threshold and the reservoir rocks began to form secondary pores. At the end of the Qingshankou age, the Denglouku Formation reached the late diagenetic stage A-B, in which the source rocks were located in the mature stage and generated enormous petroleum, the reservoir rock secondary pore formation and the trap development matched well, and the oil and gas reservoirs began to form. Today the Denglouku Formation is situated in the late diagenetic stage C in the southern Shengping area, but in the late diagenetic stage B in the northern Shengping area. Where ID equals 0. 85~1. 15 and there exist sandstone bodies, there are secondary pore zones of reservoir rock.