Objective To summarize and analyze the blood component preparation during the 20thApr 2013( 4·20)Lushan earthquake period,to provide scientific basis for quality assurance of blood components in emergency. Methods The data related to blood component preparation in Chengdu blood center during the 4·20 Lushan earthquake period,were analyzed and compared with the data of the 12thMay 2008( 5·12) Wenchuan earthquake. Results Compared to the amount of suspended red blood cells prepared in 13thMay 2008,the amount in 21stApr 2013 increased by 293%. The daily amount of preparation largely increased after the 4·20 earthquake. The breakage rate during centrifugation and leakage rate during heat seal befroe and after 4·20 earthquake period were not statistically differet( P 0. 05). The brakage rate and leakage rate during 4·20 and 5·12 earthquake period were not stastically different either( P 0. 05). Conclusion By implementing a scientific,reasonable,and realistic emergency work plan,we can ensure the quality of blood component in suddent disasters.