Based on the new code Seismic Design of Buildings GB50011-2011, several technical terms revised in this latest version were mainly discussed. A comparison study of the new code and the old one GB50011-2001 was conducted. Primary theoretical foundations about the revision were investigated in detail and a comprehensive and complete summary of the revised contents in the new code was made. Besides, new requirements on teaching methods following the new code for the seismic design of buildings course were put forward. It can be a reference to engineers to better understand the new code.