An earthquake with magnitude 7. 3 occurred on February 12，2014 (Beijing time 17: 19 p． m． )，in Yutian county，Xinjiang． According to the field survey，the highest intensity of this earthquake was Ⅸ degree． The disaster area has suffered from the Yutian M 7. 3 earthquake disaster seriously in 2008． The six years of the construction of earthquake resistance project played an important role in this earthquake in terms of the absence of casualties． By calculating the efficiency gained in the substitution of the simple housing areas before the transform for those in the earthquake relief projects in the Yutian M 7. 3 earthquake in 2008 and 2014，it can be concluded that compared with the Yutian M 7. 3 earthquake in 2008，the quake in 2014 has 3. 8 hundred million yuan (ＲMB) less in the loss of residential buildings，1. 29 billion yuan (ＲMB) less in the reconstruction，and 10000 homeless households fewer，in spite that the disaster area is larger．