Abstract： Objective To study patients' characteristics in the early phase from Weachuan Earthquake.Method Totally 576 patients from Wenchuan Earthquake were received by the emergence department of WestChina Hospital between 14:28 May 12, 2008 and 14:28 May 15, 2008. The patients were recorded the detailednames, age, living places,time and way to hospital. Injury severity score (ISS) was used to judge the severity of the injury. T test was used to analyze these acquired data, while X2 test was for count data. Results From the first to third 24-hour period, our hospital accepted 199, 111 and 256 patients respectively. Their average ISS scorewere 7.16±4.75, 10.24±5.79, and 8.55±4.96 respectively. The average number of patients per hour ac-cepted by the hospital was(7.90±11.75). The second peak time for accepting patients was the 53rd (70 pa-tients) and 54th(58 patients) hour after earthquake.The patients accepted by the hospital on the second 24 hourshad the highest ISS score (10.24±5.79), and on the first and third 24 hours the ISS score was (7.16±4.75)and (8.55±4.96), respectively. There existed significant difference on ISS score between the second 24 hoursand the first, third 24 hours (P<0.05). Conclusions According to the study, patients accepted by the hospitalon the second 24-hour period had the most serious injury, and on the third 24-hour period, the number of patients accepted by the hospital reached its peak.