Objective：To study the rescue strategy for patients with severe multiple injuries after sudden disaster under field condition. Methods and results: A 53-year-old female patient was referred to us after hit on the pelvis in the China Wenchuan earthquake. Her symptoms included large volume of hematuria, difficult breath, tenderness of the whole abdomen, and bedsore. Portable B ultrasound revealed effusion of abdomen and left chest cavity, and bladder rupture.Portable blood-gas analyzer indicated severe anemia+hypoxemia+hypokalemia+acidosis. Drainage was done through left chest cavity aspiration and bladder aspiration. Abdominal examination found rectal rupture (perforation), which was managed by Harttman+cystostomy followed by anti-infection treatment. The patient recovered 18 days after operation. Conclusion: The rich experience and skillful surgical management,the full play of portable equipment, the help from the local hospital, together with timely anti-infection management, are the keys to successful rescue of patients with severe multiple injuries under field condition.