Primaries are usually regarded the only seismic signals used for seismic imaging.However,at some obstacle area,
shots cannot be deployed,which leads to seismic imaging gap because of missing seismic primaries in the acquired
data.Therefore,at the obstacle area with developed multiple,we proposed using multiple imaging to
complement the missing seismic primaries imaging.Firstly,cross-correlation and stacking techniques are utilized to
construct pseudo-primary from multiples.Then,multiple imaging is realized by pseudo-primary imaging for the
obstacle area,which is used for complementing the information of primary imaging and obtain more details about
the structures.Tests on Sigsbee2b dataset and field data show that the method is workable and effective.