In　recent　years,　the　methodology　of　progressive　collapse　prevention　for　building　was　widely　concerned　in　Europe　and　United　States　engineering　community.　Several　buildings　design　codes　and　guidelines　which　include　progressive　collapse　provisions　were　issued.　In　China　there　is　not　design　code　including　the　same　content.　In　this　paper,　a　risk-based　design　approach　to　resist　progressive　collapse　is　introduced.　Depending　upon　building　type　and　occupancy,　buildings　are　assigned　to　four　classes.　By　means　of　arranging　ties　in　structure　and　alternate　path　analysis　method,　the　capacity　of　structure　to　resist　progressive　collapse　is　enhanced.