In order to study the oil accumulation rule of Fuyu and Yangdachengzi oil layer in Sanzhao Depression, the method of studying space distribution relation among oil distribution, source rocks and faults was applied to study the oil lateral migration model and its control action on oil accumulation and distribution. The result shows that the lateral migration model is that oil generated from the overlying K1qn1 source rocks migrates into underlying different horizons of Fuyu and Yangdachengzi oil layer under the action of buoyancy, because faults make the overlying K1 qn1 source rocks touch with underlying different horizons of Fuyu and Yangdachengzi oil layer. The more the fault step in fault is, the more horizons of Fuyu and Yangdachengzi oil layer the oil migrated into. This lateral migration model of oil generated from the overlying K1qn1 source rocks controls the oil accumulation and distribution of Fuyu and Yangdachengzi oil layer, and it mainly displays in the following two aspects: ①The horst structures in two sides of fault condensed belts are favorable places for oil of Fuyu and Yangdachengzi oil layer to accumulate. ②Fu I oil group is the main horizon for oil generated from the overlying K1qn1 source rocks to migrate and accumulate in Fuyu and Yangdachengzi oil layer. The study result is of extend value for guiding oil exploration of Fuyu and Yangdachengzi oil layer in Sanzhao Depression.