The North Sakhalin Basin is one of the most important petroliferous basins in the Fareast of Russia, and its heat flow research has great signification of the further exploration. Through the well and region heat flow analysis, we get the distribution of thermal area in the North Sakhalin Basin and the Okhotsk Sea at different periods. Then we simulate it’s responding thermal evolution and improve the traditional simple sedimentary formula. This improvement can expand the old model into the back-arc-shear basin. Besides that, through the comparison the heat flow distribution between the methodology of EASY%Ro and numerical simulation, we validate the reliable of simulation progress. The conclusion shows that the basin flow distribution is relative heterogeneous, and the evolution progress can be divided into two periods： 1） In Paleogene, the land region and sea areas have separate heat center and relatively independent heat evolution. 2） After Late Oligocene, effected by the interaction between back-arc extensional and the shear fracture, the heat flow distribution are becoming variable, and the heat flow center change to the flattened plate belt. We surmise the impact factors into two factors, the igneous activity and the sedimentary rate.