Coalfield complex geological issues are the major constraints on coal mine safe production, which need to be resolved by three-dimension seismic exploration presently. This paper, based on features of three-dimension seismic exploration and these geological issues, classified coalfield complex geological issues into complex geo-structure issues, coalseam host and lithological change issues and geological anomalous body issues, introduced methods to solve the issues, their characteristics and results, pointed out deficiencies of some methods and solutions.