Abstract:A method for stratigraphic sequence division using log and seismic data is recommended here. It has the following essential points:Synthetic seismogram and stratigraphic calibration are the key factors linking log data with seismic data.The delimitation of big log stratigraphic sequence must be restricted by very obvious seismic reflector that shows spatial closure.The delimitation of seismic stratigraphic sequence must be coincident with those of all hole stratigraphic sequences in an area.The sequence interpretation is done in the procedure of point(hole),line(passing through holes)and area;then it is repeated in the reverse procedure to ensure accurate delimitation of stratigraphic sequence.The method has received good effect in the stratigraphic sequence interpretation of a half graben-like basin in East China sea.