Abstract: High density 3D seismic exploration has been no clear definition and standard. By investigation of high?density seismic prospecting development process, the definition and reference standard for the all?digital high?density 3D seismic prospecting are presented, proving that the maximum offset approximately equals to the target depth. Taking the first all?digital high?density exploration in Shanxi for an example, the advantages of digital detector are analyzed and the construction parameters suitable for high density seismic exploration in Changzhi area are discussed in this paper