During the medical rescue of Wenchuan earthquake, West China Hospital immediately shifted to the two-track emergent system mode. More works have been done in time to cure and treat those critically ill patients effectively and to protect the medical safety of patients. The Activated Contingency Plans for major disasters have been started up to evacuate safely those mild patients in the hospital,to prevent out of danger and other accidents. More works have done on the identification of the injured or patients to improve the accuracy and strictly implement the "three investigations and seven right" system to prevent a wrong operation, or a wrong prescription, or a wrong transfusion. We have worked carefully on the referral the wounded, to referr the wounded to those Hospitals in Chengdu or other province and to prevent security incidents.