The　ancient　buildings　of　China　are　mainly　made　of　wood　and　For　thousands　of　years　they　have　experienced　sorts　of　seismic　forces　but　remain　in　good　conditions.　The　characters　of　the　ancient　buildings　of　seismic　resistance　are　related　to　their　constitution:　Beams　are　connected　with　columns　by　Tenon-Mortise　joints　which　can　produce　power-wasting　effects　by　friction　and　extrusion　between　the　tenons　and　the　mortises;Tou-Kungs(bracket　sets)　form　a　spring-like　structure　level,　which　can　isolate　horizontal　vibration　by　silding　and　absorb　vertical　seismic　energy　by　extruding;　The　triangle-like　Roof　Truss　is　placed　above　the　Tou-Kung　whose　center　is　low　enough　to　remain　stable　under　seismic　forces;　The　constitution　of　chinese　ancient　building　for　earthquake　risistance　is　worth　studying　for　modern　people.