Abstract: Some problemss and study results in engineering earthquake practice was discussed in the paper. They are the attenuation of relationship of near source ground motion with saturation and derivative model of near source ground motion saturation with regard to the rupture dimension of source dislocation and the attenuation field of earthquake intensities in China continent, the characteristics of design basis ground motion and the synthesis of design ground motion time history for the Nuclear Power Plant, zoning of earthquake resistance level, taking the middle lower reaches of Jinshajiang River for example, the engineering active fault, and the evaluation of surface dislocation caused by earthquake.