Abstract: The earthquake engineering geological condition in the Suqian city is controlled by Tanlu faults. Three standard holes are drilled in the region to study Quaternary strata in the region. And the shear wave velocity is also tested in the borehole. Much related data are also formed in the procedure of Seismic Microzoning and seismic safety evaluation for important buildings. These data show that the shear wave velocity related to depth and deposited ages of sediments. The typical values of dynamic shear modulus ratio G/Gmax- and damping ratio - in the stratum are also list in the paper.