Objective To address medical relief algorithm in earthquake center by analyzing triage and transfer of casualties in the quake-hit center Yingxiu town in the wake of the 5·12 Wenchuan earthquake.Method According to the actual hard working conditions and rule of CBASHPLAN,the locale was derided into triage area,minor wounds area,severe wounds area and transfer area.Medical team coming from Soulhwest Hospital,the Third Military Medical University was derided into several groups. Triage, treatment and transfer of casualties well arranged. Results A total of 415 victims was treated by our medical team in early three days.Of these victims,251 were severe injuned,153 were debrided,12 were decompression with cutting open the wound because of their oseofascial canpartment syndrome,and 317 casualties were transferred by helicopters.No victim died during treatment and transfer at quake-stricken region.The whole work was proceeded in good order and efficiently.Conclusions Triage and transfer of casualties scientifically allowing for the capability of medical relief and the sufficiency of medical resources are very important to deal with batches of casualties in quake-stricken region.