Abstract: Both the major advantages and current analysis and design method about the steel-frame with semi-rigid connection  are reviewed at the first.Furthermore,the classification and design method of semi-rigid connections in steel structure design specifications of the Europe,USA,Canada,Australia,HongKong,China  are discussed and summarized.The challenge and development direction of analysis and design method about the steel-frame with semi-rigid connection  are summarized at the end of this paper.

Key words: semi-rigid connection, steel frame, structure analysis and design