The casualties rescued after the earthquake are prone to acute renal failure need to be brought to the attention of rescue doctors for the following reasons: 1. Hemorrhagic shock and insufficient blood volume due to blood loss after trauma is one of the most important reasons. This blood loss is the blood loss from the broken parts on the one hand, and the internal bleeding and blood loss within the tissues after the accumulation of pressure on the other hand, which in layman’s terms means that the blood does not flow to the outside but to the flesh. The latter case is more inappropriate to be detected and is more dangerous than the former one, so it is more important to be alert when rescuing and treatment, and make sure to replenish the fluid volume. Also be alert for delayed bleeding from internal organs. 2.The rescued patient may have spent a longer time in the rubble, especially those rescued 3 days after the earthquake may suffer from severe dehydration due to hunger and thirst even without trauma, which is another cause of acute renal failure. 3, due to pelvic fractures and other causes of urethral rupture, or contusions of the kidney itself can also lead to acute renal failure. 4, trapped in the ruins for a long time excessive tension and fear, can make the catecholamine secretion increase, causing long-term spasm of the renal blood vessels, will also be possible to occur acute renal failure.