Housings，as carriers and embodiments of residential accommodation and economic development，the occurrences of earthquakes often affect housing in various degrees. In order to support earthquake relief，promote the resettlement of victims and guide the restoration and reconstruction，housings evaluation have become a crucial task in the period of post-earthquake. As the two earthquakes with the highest Richter scale in recent years in China，both of May. 12 earthquake and Sept. 21 earthquake caused the massive earthquake-affected housings，what put the housings evaluation into a crucial position in post-earthquake phases. This study takes Dujiangyan City and Nantou County，the severely-disaster area in these two disasters，as examples，combines the literature induction and a comparative study of the two to summarize their tactics and characteristics in the assessment procedure，framework and meaning. The paper concludes that，although the two are basically the same in the overall strategy，there are differences in actual strategy of organizational deployment and technology utilization. This study summarizes the experience and deficiencies of the two cases and proposes ideas and suggestions for housing evaluation in post-disaster housing emergency management.