In this paper,based on the data of virtual investigation,the author has discussed the characteristics of deformation band and earthquake frac-ture of Gulang earthquke in 1927 and analysed the geotectonical back-ground of this earthquake.The author helieves that the occurrence of Gulang earthquake in1927 Was the result that the fracture band of Tazhuang-Huangcheng andthat of Wuwei-Tianzhu were in activity at the sametime.And based no the analysis of their rupturing way,the mechanics model of fragmentation massif movement has been made.